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You enter age, weight, height and gender, but I presume it's still guessing somewhat when calculating calories burnt?
So, how accurate are they?
It's a Polar F4
Not at all.
Polar are generally reckoned to have the most accurate algorithms. I reckon you can half anything Garmin tells you and Endomondo just works it out on duration (so you're still burning calories sitting outside the pub on your mid-ride break).
Edit: probably not[i] too [/i]bad then
See it's told me 1040 kcal for 1 hr constant uphill cycling, plus 10 mins back down again. That seems way too high.
It [i]is[/i] weight dependent 🙂
Mmmm, I'm not skinny 🙂
They suck.. I'm pretty fit so register as obese on the BMI scale but I can run on the crosstrainer for 30 mins and burn over 600 cals (after adding in weight/height/age). I wasn't sweating half as much as I should be for that figure..
Completely unscientific, but there are a few online calorie calculators that should give some alternative answers.
http://www.healthstatus.com/cgi-bin/calc/calculator.cgi
http://www.nutristrategy.com/fitness/cycling.htm
Cheers I'll take a look