Find the perfect calculator for your physics problems
120 calculators found
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 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 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.