Physics Calculators
Fast, accurate calculators for every core physics formula. Each one shows the equation, explains every variable, and works through the numbers step by step.
Kinematics
Speed, Distance & Time Calculator
Solve for speed, distance, or time from v = d/t — the most fundamental kinematics relationship.
Coming soonAcceleration Calculator
Calculate acceleration from velocity change and time, or from force and mass using a = F/m.
Coming soonSUVAT Equations Calculator
Solve any kinematics problem — displacement, velocity, acceleration, and time.
Open calculator →Projectile Motion Calculator
Range, maximum height, and time of flight from launch angle and velocity.
Open calculator →Free Fall Calculator
Vertical motion under gravity alone — the θ = 90° special case of projectile motion.
Open calculator →Relative Velocity Calculator
Find the velocity of one object relative to another in one or two dimensions.
Coming soonVector Addition Calculator
Add two or more vectors by components and find the resultant magnitude and direction.
Coming soonTerminal Velocity Calculator
Estimate terminal speed from mass, drag coefficient, air density, and cross-sectional area.
Coming soonClassical Mechanics
Newton's Second Law Calculator
Solve F = ma for force, mass, or acceleration — the foundation of classical dynamics.
Coming soonKinetic Energy Calculator
Calculate kinetic energy from mass and velocity, explore the work-energy theorem, and relate KE to momentum.
Open calculator →Gravitational Potential Energy Calculator
Calculate PE = mgh near Earth's surface, or PE = −GMm/r for orbital problems.
Coming soonElastic Potential Energy Calculator
Calculate the energy stored in a stretched or compressed spring using PE = ½kx².
Coming soonMomentum Calculator
Calculate momentum from mass and velocity, or solve for a collision partner.
Coming soonImpulse & Momentum Calculator
Calculate impulse from force and time, and relate it to the change in momentum via J = Δp.
Coming soonWork & Power Calculator
Calculate mechanical work from force and displacement, and power from work and time.
Coming soonFriction Force Calculator
Calculate static or kinetic friction from the coefficient of friction and normal force using f = μN.
Coming soonGravitational Force Calculator
Calculate the gravitational force between two masses using Newton's law of gravitation.
Coming soonGravitational Field Strength Calculator
Calculate gravitational field strength g = GM/r² at any distance from a massive body.
Coming soonEscape Velocity Calculator
Calculate the minimum speed needed to escape a planet's gravitational pull using v = √(2GM/r).
Coming soonCircular Motion Calculator
Calculate centripetal acceleration, force, period, and velocity for uniform circular motion.
Coming soonBanked Curve Calculator
Find the ideal banking angle, maximum speed, or required friction for a car on a banked turn.
Coming soonTorque Calculator
Calculate torque from force, lever arm, and angle using τ = rF sin θ.
Coming soonMoment of Inertia Calculator
Calculate rotational inertia for common shapes — discs, spheres, rods, and hollow cylinders.
Coming soonAngular Momentum Calculator
Calculate angular momentum from moment of inertia and angular velocity using L = Iω.
Coming soonPendulum Period Calculator
Calculate the period, length, or gravity of a simple pendulum — with unit conversions, presets, and step-by-step working.
Open calculator →Simple Harmonic Motion Calculator
Calculate displacement, velocity, acceleration, period, and energy for an object in SHM.
Coming soonHooke's Law Calculator
Calculate spring force, spring constant, or extension using F = kx.
Coming soonBuoyancy Calculator
Calculate the buoyant force on a submerged or floating object using Archimedes' principle.
Coming soonDensity Calculator
Calculate density, mass, or volume from ρ = m/V — with unit conversions for common materials.
Coming soonPressure Calculator
Calculate pressure from force and area (P = F/A), plus hydrostatic pressure P = ρgh.
Coming soonYoung's Modulus Calculator
Calculate stress, strain, or Young's modulus from the relationship σ = Eε.
Coming soonElectromagnetism
Ohm's Law Calculator
Solve for voltage, current, resistance, or power using V = IR and the power equations.
Open calculator →Coulomb's Law Calculator
Calculate the electrostatic force between two point charges.
Coming soonElectric Field Calculator
Calculate the electric field strength from a point charge using E = kq/r².
Coming soonCapacitance Calculator
Calculate stored charge, voltage, and energy on a capacitor using Q = CV and E = ½CV².
Coming soonResistor Combinations Calculator
Calculate equivalent resistance for resistors in series, parallel, or mixed configurations.
Coming soonElectrical Power Calculator
Calculate electrical power using P = VI, P = I²R, or P = V²/R.
Coming soonMagnetic Force Calculator
Calculate the force on a moving charge or current-carrying wire in a magnetic field.
Coming soonMagnetic Field Calculator
Calculate the magnetic field strength around a straight wire, solenoid, or current loop.
Coming soonFaraday's Law Calculator
Calculate induced EMF from the rate of change of magnetic flux using ε = −NdΦ/dt.
Coming soonThermodynamics
Ideal Gas Law Calculator
Compute pressure, volume, moles, or temperature using PV = nRT.
Coming soonGas Laws Calculator
Compare two states of a gas using Boyle's, Charles's, Gay-Lussac's, or the combined gas law.
Coming soonSpecific Heat Calculator
Calculate heat energy, mass, specific heat capacity, or temperature change using Q = mcΔT.
Coming soonThermal Expansion Calculator
Calculate linear or volumetric expansion of a material from temperature change and coefficient.
Coming soonHeat Transfer Calculator
Calculate the rate of heat conduction through a material using Fourier's law Q/t = kAΔT/d.
Coming soonWaves & Optics
Wave Speed Calculator
Calculate wave speed, frequency, or wavelength from v = fλ.
Coming soonDoppler Effect Calculator
Calculate the observed frequency shift when a source moves relative to the observer.
Coming soonSnell's Law Calculator
Calculate the angle of refraction when light crosses a boundary between two media.
Coming soonRefractive Index Calculator
Calculate the refractive index of a medium from the speed of light or critical angle.
Coming soonWave Interference Calculator
Calculate path difference and determine constructive or destructive interference conditions.
Coming soonDiffraction Grating Calculator
Calculate diffraction angles, wavelength, or slit spacing using d sin θ = nλ.
Coming soonLens & Mirror Calculator
Calculate image position, magnification, and focal length using the thin lens/mirror equation.
Coming soonSound Intensity & Decibel Calculator
Convert between sound intensity and decibel level, and calculate intensity at distance.
Coming soonModern Physics
Mass-Energy Equivalence Calculator
Calculate the energy equivalent of a mass using Einstein's E = mc².
Coming soonTime Dilation Calculator
Calculate relativistic time dilation from the Lorentz factor using Δt = γΔt₀.
Coming soonLength Contraction Calculator
Calculate relativistic length contraction using L = L₀/γ at a given fraction of light speed.
Coming soonPhotoelectric Effect Calculator
Calculate photon energy, work function, or maximum kinetic energy of ejected electrons.
Coming soonDe Broglie Wavelength Calculator
Calculate the matter-wave wavelength of a particle from its momentum using λ = h/p.
Coming soonBohr Model Energy Calculator
Calculate hydrogen energy levels, photon wavelengths, and orbital radii from the Bohr model.
Coming soonHalf-Life Calculator
Calculate remaining quantity, elapsed time, or half-life of a radioactive substance.
Coming soonNuclear Binding Energy Calculator
Calculate the binding energy and binding energy per nucleon for a given isotope.
Coming soonBlack Body Radiation Calculator
Calculate peak wavelength and radiated power using Wien's law and the Stefan-Boltzmann law.
Coming soon