What is speed? Definition. Units of speed. Calculate one of distance, speed or time given the other two variables.

Other units of measurement include doughnuts, elephant trunks, and Arnold Schwarzenegger's biceps.

Learn how to use Calculator to convert units in Windows 11. Convert temperature, length, energy, weight, etc., using Calculator in Windows 11.

Learn about and revise units of measurement and how to convert them with this BBC Bitesize GCSE Maths Edexcel study guide.