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Old 01-24-09, 08:47 PM   #1
Hammonjj
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KJ to Calories

I've tried doing a couple of google searches and I've been unable to find a conversion between work(kj) to calories burned. I'm really working hard to maintain my weight through all this training and I want to be sure that I am not eating too many calories.

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James
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Old 01-24-09, 09:15 PM   #2
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http://www.ausmedia.com.au/convert_kj_to_cal.htm

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Old 01-24-09, 09:41 PM   #3
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kJ to kCal is ~4.18 to 1.

But if I understand correctly, since humans are only around 20-25% efficient at most on the bike, the kJ to kCal conversion is very close to 1:1. Somebody correct me if I misunderstood though.
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Old 01-25-09, 09:16 PM   #4
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Quote:
Originally Posted by cslone View Post
kJ to kCal is ~4.18 to 1.

But if I understand correctly, since humans are only around 20-25% efficient at most on the bike, the kJ to kCal conversion is very close to 1:1. Somebody correct me if I misunderstood though.
cslone is correct. If you have a powermeter that records actual work done, then for most purposes, it's good enough to consider "energy expended doing useful work" equivalent to "food energy burnt".
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