Physics

Use our Wavelength to Energy Calculator to find photon energy from wavelength in joules, eV, and kJ/mol using E = hc / λ with vacuum or custom wave speed.

Use our Velocity Calculator to find average velocity from distance or displacement and time. Get instant results in m/s, km/h, mph, and ft/s.

Use our Acceleration Calculator to find average acceleration from initial and final velocity or change in velocity and time. Get results in m/s², ft/s², and g.

Use our Pressure Calculator to find pressure from force and area. Get instant results in Pa, kPa, bar, psi, and atm with built-in unit conversion.

Use our Density Calculator to solve density, mass, or volume with automatic unit conversion. Works with kg, g, lb, L, mL, cm³, ft³, and more.

Use our Kinetic Energy Calculator to find KE from mass and velocity. Get instant results in joules, kJ, Wh, kWh, and ft·lbf with unit conversion.

Use our Potential Energy Calculator to find gravitational or elastic potential energy using mgh or ½kx². Get instant results in J, kJ, Wh, kWh, and ft·lbf.

Use our Work Calculator to find work done from force, distance, and angle or from mass, gravity, and height. Get results in J, kJ, Wh, kWh, and ft·lbf.

Use our Work and Power Calculator to find work from force and distance or lift, then calculate power in watts, kW, and horsepower from time.

Use our Projectile Motion Calculator to find time of flight, range, maximum height, time to peak, and velocity components from speed, angle, height, and gravity.