Why do different cycling calorie calculators give out different answers, often multiplication of one with a fixed number?

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I’m overweight and trying to lose weight via diet and stationary cycling but I’m confused with different calculators

if

Stationary bike says 100 calories (no weight input)

online calculators say 200 400 600 etc asking me the same info including weight

In: 4

5 Answers

Anonymous 0 Comments

There are too many variables to accurately track how many calories are burned during a work out session, so it just gives a rough estimate… very rough. A system would have to know your starting weight, body fat percentage, the amount of sweat and CO2 produced from the workout… etc. Even if you precisely tracked your calorie intake for a month, along with weight, and your exact cycling routine. You could get a more accurate estimate, but as you lost weight and built muscle even that would start to vary.

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