Physics Calculators
Exact, deterministic physics tools across the whole syllabus — solve the SUVAT equations, plot a projectile’s trajectory, work the Ohm’s-law wheel, or compute energy, gravitation, waves and E=mc². Everything is computed in your browser with fixed physical constants and the working shown, so the answers are exact where a chatbot would fumble the algebra.
🏁 Kinematics & motion
- Kinematic Equations (SUVAT) Calculator Enter any three of u, v, a, s and t, and the calculator picks the right kinematic equations and solves for the remaining two.
- Projectile Motion Calculator Enter launch speed, angle and height, and get the range, maximum height, time of flight and landing speed
- Free Fall Calculator Solve free fall from rest: enter a drop height, time or impact speed and get the others, with gravity you can change for the Moon or Mars.
- Average Velocity Calculator Find average velocity from displacement and time
🍎 Forces & dynamics
- Newton's Second Law Calculator (F = ma) Apply F = ma: enter any two of force, mass and acceleration and get the third.
- Momentum Calculator (p = mv) Find momentum from mass and velocity
- Friction Calculator (f = μN) Find the friction force from the coefficient of friction and the normal force
- Centripetal Force Calculator Find the centripetal force needed for circular motion
- Pressure Calculator (P = F/A) Enter any two of force, area and pressure, and the calculator solves the third
- Buoyancy Calculator (Archimedes) Enter the fluid density and displaced volume to get the buoyant force
- Terminal Velocity Calculator Enter mass, frontal area, drag coefficient and fluid density to get the terminal velocity, in m/s, km/h and mph.
- Torque Calculator (τ = rF·sinθ) Find the turning effect of a force
- Collision Calculator (1D) Enter two masses and their initial velocities to get the final velocities after an elastic, inelastic or partially-elastic collision.
💨 Energy, work & power
- Kinetic Energy Calculator (KE = ½mv²) Find kinetic energy from mass and speed
- Potential Energy Calculator (PE = mgh) Find gravitational potential energy from mass, gravity and height
- Work Calculator (W = Fd·cosθ) Find the work done by a force: W = F·d·cosθ, where θ is the angle between the force and the displacement.
- Power Calculator (P = W/t) Find power as work divided by time
- Hooke's Law Calculator (F = kx) Find the restoring force of a spring
🌍 Gravitation
〰️ Waves & optics
- Wavelength Calculator (v = fλ) Relate wave speed, frequency and wavelength
- Snell's Law Calculator (Refraction) Find the angle of refraction as light crosses between media
- Simple Pendulum Calculator Enter the pendulum length
- Spring Oscillation Calculator Enter the mass and spring stiffness to get the oscillation period, frequency and angular frequency.
- Wave & Simple Harmonic Motion Calculator Enter amplitude, wavelength and frequency to see the wave drawn and get v, T, ω and k
- Doppler Effect Calculator Find the frequency an observer hears when the source or listener is moving
- Lens & Mirror Equation Calculator Enter focal length and object distance to find the image distance and magnification
- Standing Wave & Harmonics Calculator Choose a string or pipe and enter the wave speed and length to list the fundamental and its harmonics.
🔌 Electricity
- Ohm's Law Calculator (V, I, R, P Wheel) Enter any two of voltage, current, resistance and power, and the Ohm’s-law wheel gives the other two.
- Magnetic Force Calculator Choose a moving charge or a current-carrying wire, enter the values, and get the magnetic force
- Series & Parallel Resistor Calculator Add any number of resistors and get the total resistance in series
- Series & Parallel Capacitor Calculator Add any number of capacitors and get the total capacitance
- Coulomb's Law Calculator Enter two charges and their separation to get the electrostatic force between them
♨️ Thermodynamics
☢️ Modern physics
- Photon Energy Calculator (E = hf) Find a photon’s energy from its frequency or wavelength
- Mass–Energy Calculator (E = mc²) Convert between mass and energy with E = mc²
- de Broglie Wavelength Calculator Find the quantum wavelength of a moving particle
- Special Relativity Calculator Enter a speed as a fraction of light to get the Lorentz factor γ, plus time dilation, length contraction and relativistic energy.
Solve it, and see the formula
These cover the core of introductory and A-level physics: the SUVAT kinematics solver (enter any three of u, v, a, s, t), projectile motion with a trajectory graph, Newton's laws, energy and momentum, gravitation, waves, optics, and the Ohm's-law V/I/R/P wheel. Each states the equation it uses and shows how your numbers flow through it, so the tool teaches as it calculates.
Everything is computed locally in your browser, instantly and offline. For the chemistry and biology side of the lab, see Chemistry & Lab and Biology & Lab; for the underlying math, Mathematics.
Frequently asked questions
Are these physics calculators accurate?
Yes — every tool is an exact, published equation evaluated with fixed CODATA/SI constants (g, G, c, h). There are no lookup tables that drift, and the rearrangement (including the square roots that trip up chatbots) is shown, so results are reliable.
Is my data uploaded?
No. Every calculation runs in your browser with JavaScript — nothing is sent to a server, and the tools work offline once loaded.
Do these cover my physics course?
They cover the core of GCSE/IGCSE, A-Level, AP Physics, IB and introductory college physics: kinematics (SUVAT, projectile, free fall), forces and momentum, energy/work/power, circular motion, gravitation, waves and optics, electricity, and modern physics (E=mc², photons).
Why build physics tools an AI could answer?
Because studies show chatbots make frequent calculation errors on physics problems — especially rearranging square-root equations and handling sign conventions (refraction, projectile). A deterministic solver gives the exact answer every time, with the working.