How do I calculate...?

Kassielin13

I have searched a few sites with no luck.
I forgot my HRM today and just need to know how to calculate the amount of calories burnt. I spent 32 minutes on the Curves Circuit with my HR increase at 80% - 85% the entire 32 minutes. My resting heart rate is generally 75 - 80 bpm. By past experience, I know that MFP calories calculator is way off for me. Any help would be greatly appreciated!!!
Thanks for your time

dez_yaoichan

go back a few days and see if you have anything logged that is close to that. id say go ahead and use one of those (maybe + or - 30 or so depending on how close you can get)