Weight (kg), height (cm), age, and sex—Mifflin–St Jeor BMR kcal/day (resting estimate).
The Mifflin–St Jeor resting estimate: male 10×kg + 6.25×cm − 5×age + 5, female … − 161 instead of +5. Output is rounded to a whole kcal/day string. Activity level and lean mass are not included.
This calculator uses plain decimal numbers. If a result looks wrong, check whether you used a comma instead of a dot (or vice versa) where the field expects one.