Science calculators
Physics and chemistry calculators — electricity, motion, energy, gases and solutions.
Ohm's Law Calculator
Solve for voltage, current, resistance or power from any two known values.
Parallel Resistor Calculator
Equivalent resistance for resistors in parallel (and in series, for comparison).
Velocity Calculator
Find velocity, distance or time from the other two quantities.
Acceleration Calculator
Acceleration from a change in velocity, plus the distance covered.
Kinetic Energy Calculator
Energy of a moving object: KE = ½mv².
Potential Energy Calculator
Gravitational potential energy near Earth's surface: PE = mgh.
Force Calculator
Newton's second law: F = m × a, with weight on Earth as a bonus.
Momentum Calculator
Linear momentum p = mv, with kinetic energy shown alongside.
Friction Calculator
Friction force from the coefficient of friction and the object's weight.
Projectile Range Calculator
Range, maximum height and flight time for a projectile on flat ground.
Pendulum Calculator
Period and frequency of a simple pendulum — or the length for a target period.
Wavelength Calculator
Wavelength from frequency (or the reverse) for sound, light or any wave speed.
pH Calculator
pH and pOH from hydrogen ion concentration — or concentration from pH.
Molarity Calculator
Concentration in mol/L from moles and volume — or solve for either one.
Dilution Calculator
M₁V₁ = M₂V₂: solve any one dilution value from the other three.
Ideal Gas Calculator
PV = nRT: solve for pressure, volume, moles or temperature.
Boyle's Law Calculator
P₁V₁ = P₂V₂ for a gas at constant temperature.
Half-Life Calculator
Amount remaining after radioactive decay — or the time a decay took.