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Popular Physics Tools workflows

Direct links to four high-demand tools in this category.

Speed CalculatorProjectile Motion CalculatorFree Fall CalculatorAcceleration Calculator
27 physics tools

Physics Tools

Free browser-based physics calculators for motion, forces, momentum, energy, rotation, gravitation, waves, and oscillation.

Model → calculate → connect → verify

Choose the physical model first, keep units and assumptions explicit, then move to the related motion, force, momentum, energy, rotation, wave, or oscillation calculation.

Motion & kinematics

Solve speed, acceleration, ideal trajectories, free fall, constant-acceleration motion, average speed, and relative speed.

Speed CalculatorChoose what to solve for, enter the other two values, and calculate speed, distance, or time. Results include m/s, km/h, mph, knots, ft/s, pace references, formula substitution, quick scenarios, copy, and reset.Acceleration CalculatorEnter initial velocity, final velocity, and time to calculate average acceleration in m/s² and ft/s².Kinematics CalculatorChoose a supported constant-acceleration case, enter the known quantities, and verify units and model assumptions before interpreting the result.Free Fall CalculatorUse constant-gravity kinematics to estimate fall time and impact speed while explicitly excluding air resistance.Multi-Leg Average Speed CalculatorAdd journey legs and calculate total distance divided by total time, avoiding the common mistake of taking the simple arithmetic mean of leg speeds.Relative Speed CalculatorCompare two constant speeds, choose same or opposite direction, and optionally estimate catch-up or meeting time from an initial separation.

Force, momentum & interaction

Connect Newton’s second law to momentum, impulse, friction, springs, circular motion, torque, gravitation, pressure, and center of mass.

Force CalculatorEnter mass and acceleration to calculate ideal net force, then use the connected workflow when the problem changes from translation to energy, impulse, or rotation.Momentum CalculatorUse p = mv to calculate momentum in kg·m/s and related units from common mass and speed inputs.Impulse CalculatorUse J = FΔt to find impulse and momentum change, with an optional mass input to estimate velocity change.Friction CalculatorUse F = μN and optionally derive normal force from mass on a horizontal surface.Spring Force CalculatorEnter spring constant and displacement within the ideal linear-spring model; real springs can depart from Hooke’s law outside their elastic range.Centripetal Force CalculatorEnter mass, tangential speed, and radius to calculate inward acceleration, force, angular speed, and RPM.Torque CalculatorUse τ = rF sin θ and convert newton-meters to pound-feet and pound-inches.Gravitational Force CalculatorUse F = Gm₁m₂/r² with adjustable mass and separation units.Pressure CalculatorUse P = F/A with common force and area units and convert the result to pascals, kPa, MPa, bar, and psi.Center of Mass CalculatorAdd point masses with x and y coordinates to calculate total mass and the mass-weighted center coordinates.

Energy, work & power

Move between translational, gravitational, elastic, rotational energy, work, and average power.

Kinetic Energy CalculatorEnter mass and speed, keep units explicit, and compare the result only within the ideal classical model represented by the formula.Potential Energy CalculatorUse PE = mgh with common mass and height units and compare joules, kilojoules, watt-hours, and foot-pounds.Elastic Potential Energy CalculatorUse U = ½kx² and F = kx with an explicit ideal Hooke-law model.Rotational Kinetic Energy CalculatorEnter moment of inertia and angular speed or RPM to calculate rotational energy, angular momentum, and the equivalent rotational speed.Work CalculatorUse W = Fd cos θ and see joules, kilojoules, watt-hours, and foot-pounds.Power CalculatorUse P = W/t and convert the result between watts, kilowatts, mechanical horsepower, and metric horsepower.

Rotation, waves & oscillation

Work with angular speed, wave relationships, and ideal simple-pendulum timing.

Angular Velocity CalculatorEnter RPM to calculate angular velocity, rotational frequency, and period.Wavelength CalculatorEnter any two supported wave quantities, choose consistent units, and calculate the third without implying a medium or propagation model that was not supplied.Pendulum Period CalculatorEnter pendulum length and gravitational acceleration to calculate period, frequency, and angular frequency under the small-angle simple-pendulum model.

All Physics Tools

Physics Tools

Density Calculator

Calculate density, mass, or volume from the other two values with unit conversion.

Physics Tools

Speed Calculator

Solve speed, distance, or time with unit-aware inputs, instant speed conversions, pace context, presets, and a clear speed-distance-time formula visual.

Physics Tools

Acceleration Calculator

Calculate average acceleration from velocity change and elapsed time.

Physics Tools

Force Calculator

Solve F = ma with unit-aware context and connect force to work, impulse, friction, springs, torque, and centripetal motion.

Physics Tools

Kinetic Energy Calculator

Calculate translational kinetic energy and connect it to work, power, momentum, potential energy, and rotational energy.

Physics Tools

Momentum Calculator

Calculate linear momentum from mass and velocity.

Physics Tools

Wavelength Calculator

Solve wavelength, frequency, or wave speed and keep the relationship λ = v/f visible.

Physics Tools

Projectile Motion Calculator

Calculate an ideal projectile trajectory from launch speed, angle, height, and gravity.

Physics Tools

Free Fall Calculator

Calculate ideal free-fall time and impact speed from height and initial downward speed.

Physics Tools

Potential Energy Calculator

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

Physics Tools

Work Calculator

Calculate mechanical work from force, displacement, and the angle between them.

Physics Tools

Power Calculator

Calculate average mechanical power from work or energy and elapsed time.

Physics Tools

Pressure Calculator

Calculate pressure from force divided by area.

Physics Tools

Impulse Calculator

Calculate impulse from average force and time.

Physics Tools

Friction Calculator

Calculate ideal friction magnitude from coefficient of friction and normal force.

Physics Tools

Spring Force Calculator

Use Hooke’s law for ideal spring force, with a connected dedicated elastic-energy calculator for stored energy.

Physics Tools

Centripetal Force Calculator

Calculate centripetal acceleration and force for circular motion.

Physics Tools

Torque Calculator

Calculate torque from force, lever arm, and angle.

Physics Tools

Angular Velocity Calculator

Convert rotational speed between RPM, revolutions per second, radians per second, and degrees per second.

Physics Tools

Kinematics Calculator

Solve constant-acceleration motion and connect the result to speed, acceleration, force, energy, and momentum tools.

Physics Tools

Gravitational Force Calculator

Calculate Newtonian gravitational force between two masses.

Physics Tools

Multi-Leg Average Speed Calculator

Calculate true average speed across multiple distance and time legs.

Physics Tools

Relative Speed Calculator

Calculate 1D relative speed for objects moving in the same or opposite direction.

Physics Tools

Pendulum Period Calculator

Calculate the ideal small-angle period and frequency of a simple pendulum.

Physics Tools

Elastic Potential Energy Calculator

Calculate ideal spring potential energy and restoring-force magnitude from spring constant and displacement.

Physics Tools

Rotational Kinetic Energy Calculator

Calculate rotational kinetic energy and angular momentum from moment of inertia and angular speed.

Physics Tools

Center of Mass Calculator

Calculate the 2D center of mass of multiple point masses.

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