Discover calculators and tools for math, physics, and more
221 calculators found
Calculate the perimeter of rectangles, squares, and other polygons
Calculate friction force, coefficient of friction, or normal force using F_friction = ? ? N. Free online Mechanics calculator for physics problems with static and kinetic friction calculations.
Calculate normal force from mass and gravity using N = m ? g (horizontal) or N = m ? g ? cos(?) (inclined plane). Free online Mechanics calculator for physics problems.
Convert mass in kilograms to weight (force) in Newtons using F = m � g. Free online physics calculator for converting kg to N with standard gravity (g = 9.80665 m/s�).
Calculate acceleration due to gravity using g = Gm/r� for any celestial body. Free online physics calculator with preset values for Earth, moon, mars, Jupiter, and other planets. Supports custom mass and radius inputs.
Calculate extension and retraction force for pneumatic cylinders using F = P � A. Free online physics calculator for single-acting and double-acting cylinders with comprehensive unit support for pressure, diameter, and force.
Convert between SCFm (Standard Cubic Feet per minute) and ACFm (Actual Cubic Feet per minute) using pressure and temperature corrections. Free online physics calculator for compressed air systems, HVAC, and pneumatic applications.
Calculate stellar luminosity using the Stefan-Boltzmann law: L = 4pR�sT4. Free online physics calculator for astronomy and astrophysics. Calculate luminosity, radius, or temperature of stars with preset values for Sun, Sirius, Vega, and more.
Calculate pressure, force, or area using the fundamental formula P = F/A. Free online physics calculator with comprehensive unit support for pressure (Pa, PSI, bar, atm), force (N, lbf), and area (m�, in�, cm�). Perfect for engineering, physics, and fluid mechanics applications.
Calculate hydrostatic pressure, depth, or fluid density using the fundamental formula P = ? � g � h. Free online physics calculator with comprehensive unit support for pressure (Pa, kPa, bar, PSI, atm), depth (m, cm, ft), and fluid density (kg/m�, g/cm�, lb/ft�). Perfect for diving, fluid mechanics, engineering, and physics applications.
Calculate LC filter resonant frequency, inductance, capacitance, or characteristic impedance using fundamental formulas f = 1/(2pvLC) and Z0 = v(L/C). Free online electronics calculator with comprehensive unit support. Perfect for electrical engineering, circuit design, RF applications, and signal processing.
Calculate capacitive reactance (Xc), frequency (f), or capacitance (C) using the formula Xc = 1/(2pfC). Free online electronics calculator with comprehensive unit support. Perfect for AC circuit analysis, filter design, impedance matching, and signal processing applications.
Calculate foot-pounds of energy (FPE), force, distance, or convert energy units using FPE = Force � Distance. Free online physics and mechanics calculator with comprehensive unit support for Imperial and metric systems. Perfect for ballistics, engineering, and mechanics calculations.
Calculate distance to horizon from any height using the formula d = v(2Rh + h�). Free online physics calculator for aviation, maritime, geography, and observation applications. Determine how far you can see based on altitude above sea level.
Calculate total resistance, voltage drop, and current in series circuits using R_total = R1 + R2 + R3. Free online electronics calculator with comprehensive unit support and Ohm's Law analysis. Perfect for circuit design, analysis, and education.
Calculate low pass filter cutoff frequency, resistance, capacitance, and inductance for RC and RL filters. Free online electronics calculator with support for Hz, kHz, MHz, GHz frequencies. Perfect for audio, signal processing, and power supply design.
Calculate friction factor, Reynolds number, and pressure drop in pipe flow using Hagen-Poiseuille, Blasius, and Colebrook-White equations. Free online fluid dynamics calculator supporting laminar and turbulent flow analysis with step-by-step calculations for pipeline design and pump sizing.
Calculate RC circuit time constant (t = R � C), charging voltage, cutoff frequency, and impedance. Free online electronics calculator for resistor-capacitor circuits with support for signal filtering, timing, and AC analysis.
Calculate stress (s = F/A), force, or cross-sectional area for tensile, compressive, and shear stress analysis. Free online engineering calculator for structural design, materials science, and mechanical engineering with support for multiple stress units (Pa, MPa, psi).
Calculate your weight on different planets, moons, and celestial bodies using W = m � g. Free online physics calculator comparing weight across Mercury, Venus, Earth, Moon, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, and the Sun. Perfect for space exploration, education, and planetary science.
Calculate Mach number, velocity, or speed of sound using M = v/c. Free online physics calculator for aerodynamics and fluid dynamics. Calculate Mach number from velocity and speed of sound, or use temperature to find speed of sound in air.
Calculate sound wavelength, velocity, or frequency using ? = v/f. Free online physics calculator for acoustics and wave physics. Calculate wavelength from frequency and speed of sound, or use temperature to find speed of sound in air.
Calculate decibel (dB) gain from power or voltage ratios using dB = 10�log10(P2/P1) for power and dB = 20�log10(V2/V1) for voltage. Free online physics calculator for electronics, audio engineering, and signal processing.
Calculate peak wavelength or temperature using Wien's displacement law: ?_max � T = b. Free online physics calculator for black body radiation, thermal physics, and astrophysics. Calculate the wavelength of maximum emission from temperature or vice versa.
Calculate temperature, time, or cooling constant using Newton's law of cooling: T(t) = T_s + (T0 - T_s) � e^(-kt). Free online physics calculator for thermal physics, heat transfer, and thermodynamics. Perfect for analyzing cooling and heating processes.
Calculate heat transfer rate for conduction (Q = k�A�(T1-T2)/d), convection (Q = h�A�(T_surface-T_fluid)), or radiation (Q = e�s�A�(T14-T24)). Free online thermodynamics calculator.
Calculate evaporation rate from mass, volume, or area and time. Free online thermodynamics calculator for water evaporation, pool maintenance, HVAC, and environmental analysis.
Calculate the area of rectangles, squares, circles, and triangles
Calculate the circumference of a circle using radius or diameter
Calculate the radius of a circle from diameter, circumference, or area
Calculate the area of a circle using radius, diameter, or circumference
Calculate the distance between two points using the distance formula with step-by-step solutions
Calculate the angle between two vectors in 2D or 3D space using the dot product formula
Calculate the direction (angle) of a vector in 2D or 3D space using atan2 or direction angles
Calculate the diagonal length of a rectangle using length and width with step-by-step solutions
Calculate area, perimeter, interior angles, exterior angles, apothem, and all properties of regular polygons
Calculate volume, surface area, lateral surface area, and diagonal of a rectangular prism (cuboid) with step-by-step solutions
Calculate the hypotenuse of a right triangle using the Pythagorean theorem with step-by-step solutions
Calculate all angles of a triangle using multiple methods: Law of Cosines, Law of Sines, coordinates, or area formula. Supports SSS, SAS, SSA, ASA, AAS cases, coordinate-based calculation, and area-based calculation with step-by-step solutions.
Convert linear equations from Ax + By = C to y = mx + b format
Calculate the midpoint between two points on a coordinate plane
Calculate the distance between two points using the distance formula
Find vertex, focus, directrix, and other properties of a parabola from its equation
Convert quadratic equations from standard form (ax� + bx + c) to vertex form (a(x-h)� + k). Includes standard form to vertex form conversion with step-by-step completing the square method.
Calculate the slope of a line between two points or from coordinates
Calculate slope percentage from rise/run, two points, or slope value. Convert slope to percentage grade for construction, engineering, and surveying applications with step-by-step solutions.
Calculate the surface area of a triangular prism from its dimensions
Calculate volume for rectangular prisms and triangular pyramids
Find missing sides of similar triangles using proportions and scale factors
Calculate triangle area using Heron's formula when you know all three side lengths
Find two numbers that add to a given sum and multiply to a given product
Solve proportions using cross multiplication to find missing values in ratios
Calculate velocity, speed, distance, and time using physics formulas
Calculate acceleration, initial velocity, final velocity, and time using the formula a = (v - u) / t. Free online physics calculator for kinematics problems.
Calculate free fall motion: velocity, time, and height using gravity acceleration. Free online physics calculator for kinematics problems with step-by-step solutions.
Calculate projectile motion parameters: range, maximum height, time of flight, and velocity components. Free online physics calculator using R = (v0?sin(2?))/g and h = (v0?sin?(?))/(2g).
Calculate horizontal projectile motion parameters: range, time of flight, and final velocity. Free online physics calculator using t = v(2h/g) and R = v0 ? t for horizontally launched projectiles.
Calculate arrow speed from distance/time or kinetic energy/mass. Free online physics calculator for archery using v = d/t or v = v(2KE/m) with multiple unit support.
Calculate stopping distance including reaction distance and braking distance. Free online physics calculator for vehicle safety using d = v?t + v?/(2a).
Calculate bullet kinetic energy, mass, or velocity using E = ?mv?. Free online ballistics calculator for firearms with grains, fps, and ft-lb units.
Calculate the magnitude (absolute value) of acceleration using |a| = |?v|/?t, |a| = |F|/m, or |a| = v(a??+a??+a_z?). Free online kinematics calculator for physics and engineering with multiple calculation methods.
Calculate G-force from acceleration (G = a/g) or circular motion (G = v?/(r?g)). Free online physics calculator for aviation, motorsports, and engineering.
Calculate electrical power, voltage, current, and resistance using P = V ? I, P = V?/R, and P = I?R formulas
Calculate electrical power, voltage, current, or resistance using electrical power formulas P = V ? I, P = V?/R, and P = I?R. Free online electrical power calculator for circuit design and energy calculations.
Calculate power factor (PF), real power (active power), or apparent power in AC circuits using PF = P/S. Free online electrical calculator for power factor correction, energy efficiency, and electrical engineering.
Calculate contact lens power from spectacle power using vertex distance formula. Free online contact lens vertex calculator for optometry, converting spectacle lens power to contact lens power with vertex distance compensation.
Calculate distance traveled by light or time for light to travel a distance using the speed of light constant (c = 299,792,458 m/s�). Free online physics calculator for optics, relativity, and electromagnetic calculations.
Calculate wet bulb temperature from dry bulb temperature and relative humidity using psychrometric formulas. Essential for HVAC, meteorology, and thermal comfort analysis.
Calculate dew point temperature from air temperature and relative humidity using the magnus formula. Free online thermodynamics calculator for HVAC, meteorology, weather forecasting, and environmental analysis.
Calculate density, mass, or volume using the formula ? = m/V. Free online physics calculator for material properties, fluid Mechanics, and engineering calculations.
Calculate mass from volume and density, or volume from mass and density using m = ? ? V. Free online physics calculator for material properties, chemistry, and engineering calculations.
Calculate specific gravity (relative density) using substance density and reference density. Free online physics calculator for material properties, fluid Mechanics, and engineering with multiple reference options.
Calculate buoyant force, fluid density, or displaced volume using Archimedes' principle (F_b = ? ? V ? g). Free online buoyancy calculator for physics, engineering, and fluid Mechanics calculations.
Calculate heat energy, mass, specific heat capacity, or temperature change using Q = m ? c ? ?T. Free online thermodynamics calculator for physics and engineering.
Calculate heat energy, mass, specific heat, or temperature change using calorimetry formula Q = m ? c ? ?T. Free online physics calculator for thermodynamics and chemistry with comprehensive unit support.
Calculate volumetric flow rate, area, velocity, volume, or time using Q = A ? v or Q = V/t. Free online fluid Mechanics calculator for physics and engineering.
Calculate pipe flow rate, velocity, diameter, or cross-sectional area using Q = A ? v = p ? (D/2)? ? v. Free online fluid Mechanics calculator for plumbing, HVAC, and engineering.
Calculate hydraulic radius, cross-sectional area, or wetted perimeter using R = A / P. Free online fluid Mechanics calculator for open channel flow, manning equation, and engineering with comprehensive unit support.
Calculate torque, force, or lever arm distance using t = F ? r. Free online Mechanics calculator for physics and engineering with multiple unit support.
Calculate angular velocity using angle/time (? = ?/t), frequency (? = 2pf), or linear velocity/radius (? = v/r). Free online Mechanics calculator for rotational motion and circular motion.
Calculate polar moment of inertia (J) for circles, rectangles, hollow circles, and I-beams using J = Ix + Iy. Free online mechanics calculator with step-by-step solutions and multiple unit support (mm4, cm4, in4, m4).
Calculate power, weight, or power-to-weight ratio using P/W = Power / Weight. Free online Mechanics calculator for automotive, aerospace, and engineering applications.
Calculate wavelength, velocity, or frequency using ? = v/f or ? = c/f for electromagnetic waves. Free online waves calculator for physics and engineering.
Calculate relative humidity, dry bulb temperature, or dew point temperature using psychrometric formulas. Free online thermodynamics calculator for HVAC, meteorology, and environmental analysis.
Calculate gravitational force, mass, or distance using F = G ? (m1 ? m2) / r?. Free online Mechanics calculator for physics and astronomy with Newton's law of universal gravitation.
Calculate gear ratio from number of teeth or speeds using GR = Driven/Driving or GR = input Speed/Output Speed. Free online Mechanics calculator for mechanical engineering and physics.
Calculate belt length for open belt drive systems using center distance and pulley sizes. Free online mechanical engineering calculator with formula L = 2C + p(R1 + R2) + (R1 - R2)?/C.
Calculate volume or temperature using Charles's Law: V1/T1 = V2/T2. Free online thermodynamics calculator for ideal gas law calculations with temperature and volume relationships.
Calculate pressure or volume using Boyle's Law: P1V1 = P2V2. Free online thermodynamics calculator for ideal gas law calculations with pressure and volume relationships at constant temperature.
Calculate pressure or temperature using Gay-Lussac's Law: P1/T1 = P2/T2. Free online thermodynamics calculator for ideal gas law calculations with pressure and temperature relationships at constant volume.
Calculate enthalpy change using multiple methods: ?H = ?U + P?V, ?H = Q (at constant pressure), or ?H = m ? c ? ?T. Free online thermodynamics calculator for physics, chemistry, and engineering.
Calculate efficiency percentage, output, or input for any system or process. Free online efficiency calculator for engines, machines, energy systems, and more. Works with energy, power, and work calculations.
Calculate pressure, volume, moles, or temperature using the ideal gas law: PV = nRT. Free online thermodynamics calculator for physics, chemistry, and engineering with multiple unit support.
Calculate air density, pressure, or temperature using the ideal gas law ? = P/(R?T). Free online thermodynamics calculator for aviation, meteorology, HVAC, and engineering with multiple unit support.
Calculate frequency from period (f = 1/T), wavelength and velocity (f = v/?), or electromagnetic waves (f = c/?). Free online waves calculator for physics and engineering.
Calculate resonant frequency for LC circuits (f = 1/(2pv(LC))) or mechanical systems (f = (1/(2p))v(k/m)). Free online physics calculator for electronics and Mechanics.
Calculate wire gauge (AWG), maximum current capacity, or voltage drop for electrical wiring. Free online electrical engineering calculator with support for copper and aluminum wires.
Calculate wire gauge (AWG), maximum current capacity, or voltage drop for DC electrical circuits. Free online DC wire size calculator with support for copper and aluminum wires. Perfect for solar panels, batteries, and DC power systems.
Calculate equivalent resistance for resistors connected in parallel. Free online electrical circuit calculator with support for multiple resistors using 1/R_total = 1/R1 + 1/R2 + ...
Calculate force, mass, or acceleration using Newton's second law: F = m ? a. Free online physics calculator for Mechanics problems with comprehensive unit support.
Calculate centrifugal force, mass, velocity, or radius using F = m ? v?/r. Free online physics calculator for circular motion, rotating systems, and centrifugal force calculations.
Calculate wind load, wind velocity, area, or drag coefficient using F = 0.5 ? ? ? v? � A ? Cd. Free online physics calculator for structural engineering, building design, and wind force calculations.
Calculate absolute humidity, temperature, or relative humidity using psychrometric formulas. Free online physics calculator for HVAC, meteorology, and atmospheric science.
Calculate electric dipole moment, charge, or distance between charges using p = q ? d. Free online physics calculator for electrostatics, molecular physics, and electromagnetism.
Calculate antenna length from frequency or frequency from antenna length for half-wave dipole, quarter-wave monopole, and full-wave antennas. Free online RF calculator for antenna design.
Convert between photon wavelength and energy using E = hc/?. Free online physics calculator for quantum Mechanics, spectroscopy, and electromagnetic radiation calculations.
Calculate capacitance, charge, or voltage using C = Q/V. Free online physics calculator for capacitors, electronics, and electrical circuits with comprehensive unit support.
Calculate resistance, voltage, or current using Ohm's Law: V = I ? R. Free online physics calculator for electrical circuits, electronics, and engineering with comprehensive unit support.
Calculate Schwarzschild radius or mass using Rs = 2Gm/c?. Free online physics calculator for black holes, event horizons, general relativity, and astrophysics with comprehensive unit support.
Calculate drag force, velocity, area, drag coefficient, or density using F = 0.5 ? ? ? v? � A ? Cd. Free online physics calculator for fluid dynamics, aerodynamics, and engineering.
Calculate maximum height, initial velocity, or launch angle for projectile motion using h_max = (v0? ? sin?(?)) / (2g). Free online physics calculator for kinematics and projectile motion problems.
Calculate mechanical advantage, output force, input force, or distances using mA = F_out/F_in = D_in/D_out. Free online physics calculator for simple machines, levers, pulleys, and engineering.
Convert between BTU (British Thermal Units) and tons of refrigeration instantly. Free online unit converter for HVAC, refrigeration, and cooling capacity calculations.
Calculate orbital period, semi-major axis, or mass using Kepler's Third Law: T? = (4p?/Gm) ? a?. Free online physics calculator for orbital Mechanics, planetary motion, and astrophysics.
Calculate orbital period from semi-major axis and mass using Kepler's Third Law: T = v[(4p?/Gm) ? a?]. Free online physics calculator for orbital Mechanics, planetary motion, and astrophysics with comprehensive unit support.
Calculate section modulus (Z) or dimensions for rectangular and circular cross-sections. Free online physics calculator for structural engineering, beam design, and stress analysis.
Calculate intensity, distance, or source strength using the inverse square law: I = k/r?. Free online physics calculator for light, sound, radiation, and electromagnetic fields.
Calculate displacement from initial and final positions, velocity, acceleration, and time. Free online physics calculator for kinematics, motion analysis, and physics problems.
Calculate net force (resultant force) magnitude and direction from force components or multiple forces with angles. Free online physics calculator using F_net = v(Fx? + Fy?).
Calculate tension in ropes, cables, and strings using mass/acceleration (T = m(g ? a)) or force (T = F). Free online Mechanics calculator for physics problems with multiple calculation methods.
Calculate force, spring constant, or displacement using Hooke's Law: F = k ? x. Free online physics calculator for elastic materials and springs with comprehensive unit support.
Calculate engine displacement (engine size) from bore, stroke, and number of cylinders using V = p ? (Bore/2)? ? Stroke ? Cylinders. Free online automotive calculator with support for cc, liters, and cubic inches.
Calculate final velocities or masses in collisions using conservation of momentum. Free online physics calculator for elastic and inelastic collisions using m1v1? + m2v2? = m1v1f + m2v2f.
Calculate Reynolds number or any variable using Re = (? ? v ? D) / ?. Free online fluid Mechanics calculator with flow regime determination (laminar, transitional, turbulent).
Calculate energy (watt-hours), power, or time using E = P ? t. Free online energy calculator with support for multiple units including kWh, Wh, Joules, and BTU.
Calculate wave speed from frequency and wavelength (v = f ? ?) or from distance and time (v = d / t). Free online physics calculator for waves, sound, light, and electromagnetic waves.
Convert between wavelength and frequency using f = c/? for electromagnetic waves or f = v/? for general waves. Free online wave calculator with support for multiple units.
Calculate photon energy from frequency (E = hf) or wavelength (E = hc/?). Free online quantum physics calculator with Planck's constant and speed of light.
Calculate distance to lightning strike from time delay between flash and thunder. Free online physics calculator using d = v ? t with speed of sound calculations.
Convert horsepower to amperes using I = (hp ? 746) / (V ? efficiency). Free online motor current calculator for sizing circuit breakers and wire gauges.
Convert watts (power) to amperes (current) using voltage. Free online calculator for DC and AC circuits with power factor support. Use I = P/V for DC or I = P/(V?PF) for AC.
Calculate head loss and pressure drop in pipes using Darcy-Weisbach or Hazen-Williams equations. Free online fluid Mechanics calculator for pipe sizing and pump selection.
Calculate dynamic and kinematic viscosity of water at any temperature using ? = A ? 10^(B/(T - C)). Free online fluid Mechanics calculator for physics and engineering with temperature-dependent viscosity calculations.
Calculate water density at any temperature using accurate polynomial formulas. Free online physics calculator for fluid Mechanics, chemistry, and engineering with multiple unit support.
Calculate terminal velocity, mass, cross-sectional area, or drag coefficient using v = v(2mg/(?AC_d)). Free online fluid Mechanics calculator for physics and engineering with drag force calculations.
Calculate Earth's curvature drop, distance to horizon, or hidden object height using precise formulas. Free online physics calculator for geography, astronomy, and engineering with accurate Earth radius calculations.
Calculate kinetic energy, mass, or velocity using KE = ?mv?. Free online Mechanics calculator for physics and engineering with multiple unit support and step-by-step solutions.
Calculate impact energy, mass, or velocity using E = (1/2) ? m ? v?. Free online physics calculator for collisions, safety analysis, and engineering with comprehensive unit support.
Calculate impulse (J = F?t) and momentum (p = m?v) with impulse-momentum theorem. Free online Mechanics calculator for collision analysis and force-time relationships.
Calculate electrostatic force using F = k ? (q1 ? q2) / r?. Free online electrostatics calculator for charge interactions and electric force calculations.
Calculate time dilation using special relativity: ?t = ?t0 / v(1 - v?/c?). Free online relativity calculator for proper time, dilated time, and velocity calculations.
Calculate potential energy, mass, height, or gravitational acceleration using PE = m ? g ? h. Free online Mechanics calculator for physics and engineering with multiple unit support.
Calculate exponential functions, growth, decay, and compound interest with our free exponential function calculator. Get instant results for exponential equations, exponential growth and decay, and financial calculations.
Convert between scientific notation and standard form, expand and simplify numbers
Convert numbers to scientific notation and perform arithmetic operations. Free online scientific notation calculator with support for converting to/from decimal form and calculating with scientific notation equations.
Round decimal numbers to the nearest cent (2 decimal places) for currency calculations
Round numbers to the nearest thousand with different rounding methods. Calculate rounded values for population, sales, statistics, and large numbers.
Calculate the modular multiplicative inverse of a number modulo n using the extended Euclidean algorithm
Solve inverse variation problems of the form y = k / x. Solve for y, k, or x given two values.
Calculate the volume of a triangular pyramid (tetrahedron) from base area and height or side lengths
Calculate the average rate of change of a function between two points using the slope formula
Calculate the quotient and remainder when dividing two numbers with step-by-step results
Calculate the remainder when dividing two numbers using modulo operation
Solve systems of simultaneous congruences using the Chinese Remainder Theorem algorithm
Calculate the volume of a hemisphere using the radius with step-by-step calculations
Calculate the volume of a sphere using radius or diameter with step-by-step solutions
Calculate linear regression using least squares method. Find best-fit line, correlation coefficient, and make predictions
Calculate binomial coefficients C(n,k) for combinations. Find the number of ways to choose k items from n items
Calculate the square of a binomial expression using the formula (a+b)� = a� + 2ab + b�. Free online algebra calculator with step-by-step solutions and detailed explanations.
Compare two numbers to determine which is greater, less than, or equal to the other
Calculate the sum of arithmetic, geometric, and custom series with step-by-step solutions
Solve proportions, check if ratios are proportional, or calculate scale factors with step-by-step solutions
Calculate the area of a semicircle using radius, diameter, or circumference with step-by-step solutions
Find the greatest common factor of two or more numbers using the Euclidean algorithm with step-by-step solutions
Calculate sides, area, and perimeter of a 45 45 90 triangle (isosceles right triangle) with step-by-step solutions. Free online 45-45-90 triangle calculator for finding missing sides, area, and perimeter.
Calculate sides, area, and perimeter for 45-45-90 and 30-60-90 special right triangles. Find missing sides using special right triangle ratios with step-by-step solutions for both triangle types.
Calculate the nth term and sum of a geometric sequence with step-by-step solutions and sequence visualization
Calculate the nth term and sum of an arithmetic sequence. Find any term using the common difference with step-by-step solutions and sequence visualization.
Convert between point-slope form, slope-intercept form, and standard form of linear equations with step-by-step solutions
Find the equation of a circle from center and radius, or from three points on the circle with step-by-step solutions
Calculate the length of any side of a right triangle using the Pythagorean theorem with step-by-step solutions
Calculate the length of an arc using radius and central angle with step-by-step solutions
Calculate percentages, percentage changes, and percentage relationships with step-by-step solutions
Calculate arithmetic, geometric, harmonic, and weighted averages with step-by-step solutions
Convert between decimals, percentages, and fractions with step-by-step solutions
Calculate all six trigonometric functions (sin, cos, tan, csc, sec, cot) for any angle in degrees or radians
Calculate missing sides and angles in right triangles using Pythagorean theorem and trigonometry
Calculate all properties of an isosceles triangle including sides, angles, area, perimeter, and height with step-by-step solutions
Calculate surface area for cube, rectangular prism, cylinder, sphere, cone, and triangular prism with step-by-step solutions
Calculate the height of any triangle using multiple methods: from base and area, three sides (Heron's formula), or trigonometry with step-by-step solutions
Calculate significant figures, round numbers, and perform arithmetic operations while maintaining proper precision
Calculate how long it takes for a quantity to double at a given growth rate using Rule of 70 or natural logarithm
Calculate natural logarithm (ln), common logarithm (log10), or logarithm with any custom base with step-by-step solutions
Calculate the golden ratio (f), multiply or divide by f, or find golden rectangle dimensions with step-by-step solutions
Calculate area, perimeter, side length, apothem, and diagonal of a regular hexagon with step-by-step solutions
Calculate area, perimeter, side length, apothem, and diagonal of a regular octagon with step-by-step solutions
Work with slope-intercept form (y = mx + b) equations. Find slope, y-intercept, convert to other forms, and graph information with step-by-step solutions
Calculate area, perimeter, height, and side length of an equilateral triangle with step-by-step solutions. All sides equal, all angles 60?
multiply two or more numbers instantly with our free online multiplication calculator. Get accurate results with step-by-step calculations.
Calculate the hyperbolic sine (sinh) of any number instantly. Free online sinh calculator with step-by-step calculations and explanations.
Calculate the error function (erf) and complementary error function (erfc) of any number with high precision
Calculate the error bound for Taylor polynomial approximations using Lagrange remainder formula
Calculate the percent error between measured and true values. Find accuracy of measurements and experimental results
Calculate the percentage difference between two values when comparing experimental results. Find relative difference between measurements
Calculate the volume of a cylinder instantly using radius and height. Free online cylinder volume calculator with step-by-step calculations and formulas.
Calculate the arithmetic mean (average) of a set of numbers instantly. Free online mean calculator with step-by-step calculations and explanations.
Calculate what percentage one time period is of another. Free online time percentage calculator with support for hours, minutes, and seconds.
Add, subtract, multiply, divide, and simplify fractions instantly. Free online fraction calculator with step-by-step calculations and decimal conversions.
Reduce fractions to their lowest terms instantly. Free online simplify fractions calculator with step-by-step calculations, GCD finder, and decimal conversions. Perfect for learning how to simplify 4/8 and other fractions.
Find the least common denominator (LCD) for two or more fractions. Calculate common denominators and convert fractions to equivalent fractions with step-by-step solutions.
Convert between decimal and two's complement binary representation. Calculate two's complement for signed integers with step-by-step solutions for 8-bit, 16-bit, and 32-bit formats.
Calculate overtime pay with time and a half (1.5x), double time (2x), or custom multipliers. Free online finance calculator for accurate overtime pay calculations.
Compute overtime pay at time and a half (1.5�) quickly and accurately. Ideal for payroll, budgeting, and paycheck verification.
Calculate your salary or hourly pay after a raise. Supports percentage or fixed amount raises with a step-by-step breakdown.
Calculate selling price based on cost price and markup. Supports percentage or fixed amount markup with step-by-step breakdown.
Calculate price per square foot for real estate, flooring, and construction. Determine unit pricing by dividing total price by square footage. Essential for property valuation and cost estimation.
Calculate real estate agent commission and seller net proceeds from a property sale using sale price and commission rate.
Calculate cashback earned from purchases using a cashback percentage. Determine dollar rewards and effective return for credit card offers and promotions.
Calculate dividend yield percentage to evaluate the income return on stock investments based on stock price and annual dividend.
Calculate click-through rate (CTR) from clicks and impressions. Analyze digital marketing campaign performance with CTR formula. Essential for PPC, email, and social media marketing analytics.
Calculate return on ad spend (ROAS) from revenue and ad costs. Measure advertising profitability for Google Ads, Facebook, and digital marketing campaigns. Essential for evaluating campaign ROI.
Calculate cost per mille (CPM) from ad spend and impressions. Analyze display and social media advertising pricing efficiency. Essential for evaluating impression-based campaign costs.
Calculate yield to maturity (YTM) for bonds. Free online YTM calculator to determine bond returns based on face value, coupon rate, current price, and maturity date.
Calculate asset appreciation based on initial and final values or appreciation rate. Track property, investment, and asset value growth over time.
Calculate the expense ratio of mutual funds and investment funds. Determine the percentage of fund assets spent on annual expenses to evaluate fund costs.
Calculate price elasticity of demand (PED) to understand how quantity demanded changes with price changes. Determine if demand is elastic, inelastic, or unit elastic.
Calculate year-over-year growth (YoY) to measure business performance, revenue growth, and annual metrics changes. Track growth rate for financial analysis.
Calculate temperature at any altitude using ICAO Standard Atmosphere or custom lapse rate method. Free online physics calculator with multiple unit support (�C, �F, K) for temperature and (m, km, ft) for altitude. Perfect for aviation, weather, and atmospheric science.
Calculate wire resistance, length, diameter, or resistivity using R = ? � L / A formula. Free online physics calculator with support for 11 materials, temperature correction, and multiple unit systems (O, mO, kO, MO).
Calculate wavelength, frequency, or photon energy for hydrogen-like transitions using the Rydberg equation. Supports custom Rydberg constant and multiple units for spectroscopy and physics applications.
Calculate Young's modulus (E), stress, strain, required force, or required cross-sectional area using standard elasticity formulas. Ideal for materials engineering and mechanics problems.