Health
BMR calculator
Estimate resting daily energy expenditure using the Mifflin–St Jeor equation.
Clear and dependable
How to use this calculator
Select the formula sex and enter age, weight in kilograms and height in centimetres. The Mifflin–St Jeor equation estimates resting daily energy use.
Understanding the result
BMR is the estimated energy used per day at rest. It is not total daily energy expenditure and does not include activity, digestion or individual metabolic variation.
Common questions
Are intermediate values rounded?
No. Full practical precision is retained during calculation and rounding is applied only to the displayed values.
What limitations should I consider?
General adult estimate only. It does not measure metabolism or provide a diagnosis and is not suitable for children, pregnancy or clinical nutrition planning.