Physics & Chemistry calculators
Motion, force, energy, molarity, gas laws, half-life and more.
41 free tools
Most used
Acceleration CalculatorFind acceleration from a change in speed, or from force and massChemical Equation BalancerBalance any chemical equation with the smallest whole-number coefficientsDensity CalculatorSolve for density, mass or volume in any common unitDilution CalculatorSolve C₁V₁ = C₂V₂ and see exactly how much stock and diluent to mixForce CalculatorUse Newton's second law F = ma to find force, mass or accelerationGrams to Moles CalculatorConvert grams ↔ moles ↔ particles for any chemical formulaHalf-Life CalculatorFind remaining amount, elapsed time or half-life for any exponential decayIdeal Gas Law CalculatorSolve PV = nRT for pressure, volume, moles or temperatureKinetic Energy CalculatorFind kinetic energy, mass or speed with KE = ½mv²Molar Mass CalculatorMolecular weight of any formula with an element-by-element breakdownMolarity CalculatorFind molarity, or the mass of solute needed to make a solutionpH CalculatorFind pH, pOH, [H⁺] and [OH⁻] for any solution, acid or baseProjectile Motion CalculatorRange, max height, flight time and trajectory from speed and angleVelocity CalculatorSolve speed, distance or time — the other two do the rest
More physics & chemistry tools
Boyle's Law CalculatorSolve P₁V₁ = P₂V₂ for any missing pressure or volumeCharles's Law CalculatorSolve V₁/T₁ = V₂/T₂ with automatic Kelvin conversionCombined Gas Law CalculatorSolve P₁V₁/T₁ = P₂V₂/T₂ for any missing pressure, volume or temperatureFree Fall CalculatorHow long it takes to fall and how fast it hits the groundGravitational Force CalculatorNewton's law of gravitation for any two masses, from apples to planetsKinematics (SUVAT) CalculatorKnow any three of s, u, v, a, t? Get the other two instantlyMomentum CalculatorMomentum, impulse and elastic or inelastic collisions in one placePercent Yield CalculatorPercent yield from actual and theoretical yield — or work backwardsPotential Energy CalculatorFind gravitational potential energy (PE = mgh) on Earth or any planetPressure CalculatorFind pressure from force and area, or fluid pressure at any depthSpecific Heat CalculatorSolve Q = mcΔT for heat energy, mass, specific heat or temperature changeTheoretical Yield CalculatorFind the maximum product mass from your limiting reactant and equationTorque CalculatorCompute torque from force, lever arm length and angle in N·m and lb·ftWavelength and Frequency CalculatorConvert wavelength ↔ frequency for light, radio and sound, with photon energyBuoyancy CalculatorFind buoyant force with Archimedes’ principle and check if it floatsCentripetal Force CalculatorFind the force and acceleration needed to keep an object moving in a circleDoppler Effect CalculatorFind the pitch you hear from a moving source or while you are movingEscape Velocity CalculatorFind how fast you must go to escape a planet, moon or star’s gravityFriction CalculatorFind friction force from the coefficient of friction on flat ground or a slopeHooke's Law CalculatorSolve F = kx for spring force, spring constant or extensionLimiting Reactant CalculatorFind the limiting reagent, theoretical yield and leftover excessMolality CalculatorMoles of solute per kilogram of solvent — plus freezing and boiling shiftsPendulum Period CalculatorFind the period, frequency or length of a simple pendulumPercent Composition CalculatorMass percent of every element in a compound, from its formulaSnell's Law CalculatorFind refraction angles, refractive index and the critical angleThin Lens Equation CalculatorSolve 1/f = 1/dₒ + 1/dᵢ and see where and how big the image isWork and Power Calculator (Physics)Work done from force, distance and angle — plus power from time