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Kinetic Energy Calculator
Calculate the kinetic energy of a moving object from its mass and speed: KE = ½mv².
Speed Calculator
Solve speed, distance or time: enter any two and get the third, in metric or imperial units.
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How to use this calculator
Enter your values after choosing the type of calculation in the tabs. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.
Speed, distance and time
speed = distance ÷ time
distance = speed × time
time = distance ÷ speed
Keep units consistent: km with km/h and hours, miles with mph. Example: 150 km at 60 km/h takes 2.5 h (2 h 30 m). This is average speed; stops and traffic change real journey times.
Frequently asked questions
How long does 100 miles take at 70 mph?
About 1 h 25.7 m.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Formula tests passed · human review pending
- Last updated
- 31 Oct 2026
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