Physics calculators
Energy, force, motion, circuits, waves and optics. Free, instant and with the working shown.
Please note: For study and planning. Check calculations independently before using results with chemicals, electricity, pressure or machinery, and follow safety data sheets, manufacturer instructions and local regulations.
All 15 tools
- Kinetic Energy CalculatorCalculate the kinetic energy of a moving object from its mass and speed.
- Potential Energy CalculatorCalculate gravitational potential energy from mass, height and gravity.
- Ohm's Law CalculatorSolve for voltage, current or resistance, with power.
- Electrical Power CalculatorCalculate power in watts from voltage and current, with kWh per hour.
- Projectile Motion CalculatorFind range, flight time and maximum height from launch speed and angle.
- Free Fall CalculatorFind fall time, height and impact speed for a dropped object.
- Force Calculator (F = ma)Calculate force, mass or acceleration using Newton's second law.
- Pendulum CalculatorFind the period and frequency of a simple pendulum.
- Wavelength and Frequency CalculatorConvert between wavelength and frequency for light or sound.
- Specific Heat CalculatorCalculate heat energy, temperature change or mass from specific heat capacity.
- Gravitational Force CalculatorCalculate the attraction between two masses.
- Centripetal Force CalculatorFind the inward force and acceleration for circular motion.
- Lens Equation CalculatorFind image distance and magnification for a thin lens.
- Escape Velocity CalculatorFind the speed needed to escape a planet's gravity.
- Resistor Calculator (Series and Parallel)Find the equivalent resistance of resistors in series or parallel.