Physics Calculators

Mechanics, thermodynamics, electricity, and optics calculators.

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Showing 43 of 43 calculators

Velocity Calculator

Calculate velocity from distance and time or initial velocity plus acceleration instantly.

Acceleration Calculator

Calculate acceleration from initial velocity, final velocity, and time instantly.

Force Calculator

Calculate force using Newton's second law F = ma from mass and acceleration.

Kinetic Energy

Calculate the kinetic energy of a moving object from its mass and velocity.

Potential Energy

Calculate gravitational potential energy from mass, height, and gravity.

Power Calculator

Calculate mechanical power from work done and time using P = W/t.

Momentum Calculator

Calculate linear momentum from mass and velocity using p = mv.

Free Fall

Calculate free fall distance, time, and impact velocity under gravity.

Friction Calculator

Calculate friction force from the coefficient of friction and normal force.

Torque Calculator

Calculate torque from force, lever arm distance, and angle of application.

Frequency Calculator

Calculate frequency from period or convert between frequency and period.

Speed of Sound

Calculate the speed of sound in air based on temperature in Celsius.

Voltage Divider

Calculate output voltage of a resistive voltage divider circuit.

Resistor Calculator

Calculate total resistance of two resistors in parallel.

LED Resistor

Calculate the correct current-limiting resistor for an LED circuit.

Density Calculator

Calculate density from mass and volume using the formula ρ = m/V.

Boyle's Law

Calculate pressure or volume changes in a gas using Boyle's Law P1V1 = P2V2.

Flow Rate

Calculate volumetric flow rate from pipe diameter and fluid velocity.

Reynolds Number

Calculate the Reynolds number to determine laminar or turbulent flow regime.

E=mc² Calculator

Calculate energy from mass using Einstein's famous equation E = mc².

Ohm's Law

Calculate voltage, current, or resistance using Ohm's Law V = IR.

Wavelength Calculator

Calculate wavelength from frequency and wave speed using λ = v/f.

Thin Lens

Calculate image distance and magnification using the thin lens equation for converging and diverging lenses.

Projectile Motion

Calculate range, max height, and flight time for a projectile launched at any angle and velocity.

Centripetal Force

Calculate centripetal force, acceleration, and angular velocity for an object moving in a circle.

Spring Constant

Calculate spring constant, force, displacement, and potential energy using Hooke's Law.

Decibel

Convert sound intensity to decibels and compare noise levels using the dB logarithmic scale.

Doppler Effect

Calculate the observed frequency shift when a sound source moves toward or away from an observer.

Capacitance

Calculate parallel plate capacitance, stored charge, and energy for a given plate area and separation.

Escape Velocity

Calculate the minimum velocity needed to escape a planet's gravitational pull.

Buoyancy

Calculate buoyant force and determine whether an object floats or sinks using Archimedes' principle.

Pendulum

Calculate the period, frequency, and angular velocity of a simple pendulum from its length.

Electric Field

Calculate the electric field strength and potential at a distance from a point charge.

Thermal Expansion

Calculate how much a material expands or contracts with temperature change using its expansion coefficient.

Snell's Law

Calculate the angle of refraction when light passes between two media using Snell's law.

Wind Chill

Calculate the wind chill index to find what the temperature feels like with wind exposure.

Heat Index

Calculate the heat index to see how hot it really feels when humidity is factored in.

Dew Point

Calculate the dew point temperature from air temperature and relative humidity.

Work Energy

Calculate work done by a force over a distance, including angled forces.

Pressure

Calculate pressure from force and area, with results in Pa, atm, psi, and bar.

Specific Heat

Calculate heat energy transferred using mass, specific heat capacity, and temperature change.

Resistor Color Code

Decode 4-band resistor color codes to find resistance value and tolerance.

Wire Resistance

Calculate electrical resistance of a wire from its length, cross-sectional area, and material resistivity.