Physics
41 free online tools
Physics calculators for mechanics, thermodynamics, waves, and more. Calculate force, energy, velocity, and other physical quantities with standard formulas.
Watts to Amps Calculator
Calculate watts to amps, amps to watts for DC and AC circuits
Torque Calculator
Calculate torque using force, power, angular acceleration, or moment of inertia
Series Resistor Calculator
Calculate total resistance, current, voltage drops, and power for series circuits
Parallel Resistor Calculator
Calculate total resistance, current, branch currents, and power for parallel circuits
Centrifugal Force Calculator
Calculate centrifugal force with acceleration and angular velocity calculations
Angular Frequency Calculator
Calculate angular frequency, frequency, period, and RPM with conversions
Angular Momentum Calculator
Calculate angular momentum for point mass, rigid body, and orbital systems
RLC Calculator
Calculate resonance, impedance, and reactance for RLC circuits
Stress Calculator
Calculate mechanical stress (tensile, compressive, shear) with safety analysis
Time Dilation Calculator
Calculate relativistic time dilation from velocity and gravity
Angular Displacement Calculator
Calculate angular displacement with velocity and acceleration
Torque to HP Calculator
Convert between torque, horsepower, and RPM for engines and motors
Gear Ratio Calculator
Calculate gear ratios, speed, and mechanical advantage for gear systems
SNR Calculator
Calculate signal-to-noise ratio from power, voltage, or dB values
kg to Newtons Calculator
Convert between mass (kg) and weight (Newtons) with different gravity values
Potential Energy Calculator
Calculate gravitational and elastic potential energy
Momentum Calculator
Calculate linear momentum with step-by-step solutions
Thermal Expansion Calculator
Calculate linear and volumetric thermal expansion
Refractive Index Calculator
Calculate refraction angles using Snell's law and critical angles
Mirror Equation Calculator
Calculate image distance, focal length, and magnification for mirrors
Gravitational Force Calculator
Calculate gravitational force between two masses using Newton's law
Centripetal Force Calculator
Calculate centripetal force and circular motion parameters
Buoyancy Calculator
Calculate buoyant force and determine if objects float or sink
Pendulum Period Calculator
Calculate pendulum period and frequency for simple harmonic motion
Friction Calculator
Calculate friction force and coefficient for different surfaces
Free Fall Calculator
Calculate free fall time, height, and velocity with gravity
Hooke's Law Calculator
Calculate spring force, constant, and displacement using Hooke's Law
Inclined Plane Calculator
Calculate forces, acceleration, and mechanical advantage on inclined planes
Reynolds Number Calculator
Calculate Reynolds number for fluid flow analysis
Ideal Gas Law Calculator
Calculate pressure, volume, temperature, or moles using PV=nRT
Ohm's Law Calculator
Calculate voltage, current, or resistance (V = IR)
Density Calculator
Calculate density, mass, or volume using the formula ρ = m/V
Force Calculator
Compute force using F = m × a
Heat Transfer Calculator
Calculate heat transfer using Q = mcΔT formula
Wave Speed Calculator
Calculate wave speed, frequency, or wavelength using v = fλ
Kinetic Energy Calculator
Calculate kinetic energy using KE = ½mv²
Projectile Motion Calculator
Calculate trajectory, range, height, and time of flight
Work and Energy Calculator
Calculate work, power, and energy from force, displacement, and time
Pressure Converter
Convert between Pascal, Bar, PSI, Atmosphere, and Torr
Frequency to Wavelength Converter
Convert frequency to wavelength and vice versa using the speed of light
Speed Calculator
Calculate speed, distance, or time
Why Use Our Physics Tools?
Calculators for all major physics topics
Standard physics formulas and constants
Unit conversion for physical quantities
Visual representations where applicable
Suitable for students and professionals
Instant calculations with detailed results
Common Use Cases
Calculating force using Newton's laws
Computing kinetic and potential energy
Solving projectile motion problems
Calculating wave properties
Computing heat transfer
Solving Ohm's law problems
Calculating ideal gas properties
Converting pressure units