BMR Calculator
Calculate BMR returns a Mifflin-St Jeor resting figure in kcal per day. Activity is not an input on this form.
How to use
- Set Sex to Male or Female.
- Enter Age, Weight (kg), and Height (cm).
- Click Calculate BMR. The result is kcal per day. The detail line then shows example maintenance figures using sedentary 1.2, light 1.375, and moderate 1.55.
When it helps
Use this page when you want the resting number by itself, before any activity guess. The multipliers are examples printed after the result. They are not a menu, and the line stops at moderate. It does not list Active or Very active.
To choose an activity and get one TDEE, use the calorie calculator, which multiplies this same equation by the factor you pick and also shows a mild deficit and surplus. The BMI calculator is the weight-and-height category, not a calorie result.
Limits
The kcal-per-day result is an estimate of resting burn, not a diagnosis. Male BMR is 10 times kg, plus 6.25 times cm, minus 5 times age, plus 5. Female BMR uses the same terms with minus 161 instead of plus 5.
If age, weight, or height is missing, the result says Enter all values. Because the form never asks how you move, do not treat 1.2, 1.375, or 1.55 as a measured expenditure. They only illustrate what those factors would do to the BMR.
Questions
Why is there no activity field?
This tool calculates BMR only. Sedentary, light, and moderate appear as example multipliers on the detail line, not as choices you save.
Are those the only activity factors on the site?
No. This detail line shows 1.2, 1.375, and 1.55. The calorie calculator also offers higher factors for Active and Very active.
Does the result keep decimals?
No. The BMR and the example lines are rounded to whole kcal per day.