Cycling calorie calculator
Kilojoules are average watts times time. As a coaching shortcut, food calories are about the same numbers.
Worked example
Worked example: 1,296 kJ. Work. Food calories, about: 1,296. Change the numbers and the result updates immediately.
How to use it
- Enter the ride's average power.
- Enter how long it lasted.
- Kilojoules are the work. Food calories are about the same number.
Mechanical work is average power times duration. On the bike the body is about 24% efficient, which is why kilojoules and food calories land almost equal. It is a coaching equivalence, not a lab measure.