How to use this result
Treat the number as an informed baseline, then compare it with two to four weeks of real behavior. For nutrition tools, body-weight trend is more useful than one weigh-in. For performance tools, repeatable training data is more useful than a single best day.
Hooping keeps the formulas visible because calculators can look more precise than they are. Rounding, measurement error, food-label variance, and individual physiology mean the practical answer is usually a range.
Sources and assumptions
- Mifflin-St Jeor equation for resting metabolic rate estimates.
- Katch-McArdle equation when body fat percentage is supplied.
- Standard activity multipliers from sedentary through athlete-level training.
- U.S. Navy circumference method for tape-based body fat estimation.
- Protein ranges reflect common sports-nutrition targets per kilogram of body weight or lean mass.
See the full Hooping methodology and editorial policy for review standards and correction handling.
Frequently asked questions
Is this result exact?
No. It is an estimate from the inputs and formulas shown here. Use it as a baseline, then adjust from measured outcomes.
Can this replace medical advice?
No. Hooping calculators are educational tools and are not medical diagnosis, treatment, or individualized clinical advice.