Physics Calculators
Free physics calculators: solve Ohm's law, find the range, height and flight time of a projectile, and work out speed, distance or time. No sign-up.
3 Calculators
All Physics Calculators
Physics Calculators Explained
Physics problems follow a few formulas, and our calculators apply them for you. The Ohm's Law Calculator takes any two of voltage, current, resistance and power and finds the other two, with units from milli to kilo so that you can use mA and kΩ directly. The Projectile Motion Calculator takes a launch speed, an angle and an optional starting height and gives the range, maximum height, time of flight and impact speed, on Earth, the Moon, Mars or Jupiter. The Speed Calculator finds speed, distance or time from the other two, and the average speed over several legs of a trip.
They use the standard textbook models: steady circuits with ideal resistors, and projectiles with no air resistance. Real situations add effects those models leave out, so treat the results as a guide. For unit changes such as speed or length, see our converters.
Popular physics calculators include Ohm's Law Calculator, Projectile Motion Calculator and Speed Calculator.
Frequently Asked Questions
Are the physics calculators free to use?
Yes. Every physics calculator on CalculatorEver is free, with no signup. The calculations happen in your browser, and the numbers you enter are not stored or sent to a server.
Do the calculators take air resistance into account?
No. The Projectile Motion Calculator assumes the object moves only under gravity. Air resistance makes real objects land shorter, especially light or fast ones.
Can I use different units?
Yes. The Ohm's Law Calculator has a unit list for each box, and the Projectile Motion Calculator works in m/s, km/h, mph and ft/s, with meters or feet. For other conversions use our converters.
Is this useful for schoolwork?
Yes. The results and worked examples follow the standard formulas taught in school and first-year physics. Always show your own working when you submit an answer.
