Calculate Calories Burned

Notes: I searched google for a way to calculate calories burned during my workouts based on average heart rate. It took some digging, but I finally found some formulas posted in a cycling forum. So, I created this nifty calculator. The numbers are sometimes quite different than what you get using caloriesperhour.com.

After a comment from a reader, I made the following change for Women without VO2max: changed “- 0.1263 x weight” to “+ 0.1263 x weight”. The reader noticed that calories burned went down with increasing weight. But that doesn’t make sense. So I compared the numbers to the men’s formula, and I think that should be a plus. The original page I got the formula from is here. Now it seems like it’s calculating too many calories for me, but oh well…

Quite a few folks are telling me that this gives a much higher number than their heart rate monitors say for calories burned. One guy pointed out that he thinks the formula uses 60 for VO2 max if you don’t input anything in for that, and that’s a super high V02 max, like what Lance Armstrong has! I recommend putting in 35 for V02 max if you don’t know it.
See this site for more info: http://www.brianmac...co.uk/vo2max.htm#vo2

Based on the following formulas:
Using VO2max
   Men: C/min = (-59.3954 + (-36.3781 + 0.271 x age + 0.394 x weight + 0.404 x VO2max + 0.634 x HR))/4.184
   Women: C/min = (-59.3954 + (0.274 x age + 0.103 x weight + 0.380 x VO2max + 0.450 x HR)) / 4.184

Without VO2max
   Men: C/min = (-55.0969 + 0.6309 x HR + 0.1988 x weight + 0.2017 x age) / 4.184
   Women: C/min = (-20.4022 + 0.4472 x HR + 0.1263 x weight + 0.074 x age) / 4.184
weight is in kg