well i follow the don't diet diet protocol and the calorie caluclations are as follows:
1. Multiply lean body mass in kg (92kg for me) by 22.
2. Next add 500 to this number and this gives the resting metabolic rate.
3. Next, multiply this number above by an activity factor (somewhere between 1.2-2.1). This gives the resting metabolic rate plus activity factor number.
4. Then take the resting metabolic rate and multiply this by 0.10 or 0.15.
5. Add this last number to the number you got when you multiplied your resting metabolic rate by your activity factor in order to determine daily maintenance calorie level.