Science Calculators

Calculate the kinetic energy of a moving object from its mass and velocity.

Find final velocity, displacement and average velocity from initial velocity, acceleration and time.

Calculate force from mass and acceleration using F = m·a, plus the object's weight under gravity.

Calculate gravitational potential energy from mass, height and gravity using PE = m·g·h.

Calculate mechanical work from force and distance, and the power from the time taken.

Solve for voltage, current, resistance or power using Ohm's law from the values you know.

Find the equivalent resistance of up to four resistors wired in series or in parallel.

Calculate the charge stored on a capacitor and its stored energy from capacitance and voltage.

Calculate density from mass and volume, with the result in kg/m³ and g/cm³.

Calculate the escape velocity from a planet or moon given its mass and radius.

Calculate the Reynolds number of a flow and classify it as laminar, transitional or turbulent.

Calculate the restoring force and stored energy of a spring from its stiffness and displacement.

Calculate pH, pOH and hydroxide concentration from the hydrogen-ion concentration of a solution.

Solve the ideal gas law PV = nRT for pressure, volume, moles or temperature using R = 0.082057 L·atm/mol·K.

Use Boyle's law to find the new volume of a gas when its pressure changes at constant temperature.

Use Charles's law to find the new volume of a gas when its temperature changes at constant pressure.

Calculate molarity (moles per litre) from the amount of solute and the volume of solution.

Find how much of a substance remains after a given time from its half-life and starting amount.

Calculate the heat energy needed to change a substance’s temperature from its mass, specific heat and temperature change.

Calculate how much a material lengthens with temperature using its linear expansion coefficient.

Convert between the wavelength and frequency of light and find the photon energy in joules and electronvolts.

Use Snell's law to find the angle of refraction when light passes between two media, and detect total internal reflection.

Calculate molality (moles of solute per kilogram of solvent), the temperature-independent measure of concentration.