BMR Calculator

Worked example

Male, 30, 70 kg, 175 cm — about 1,649 kcal/day

Quick answer

What does BMR represent?

It estimates energy used at rest under standardized assumptions; actual daily needs are higher with activity.

What is the BMR Calculator?

Estimate basal metabolic rate with the Mifflin–St Jeor equation. Use it when you have the required inputs and want a deterministic, repeatable result with the calculation method visible.

How to use this calculator

Enter the values requested by the tool, keep units and time periods consistent, resolve any validation message, calculate, then review the primary answer together with the displayed formula and supporting values.

Formula and method

This calculator uses a deterministic formula and shows the calculation breakdown with the result so the answer can be checked.

Worked example

Male, 30, 70 kg, 175 cm about 1,649 kcal/day

Common mistakes to avoid

Check units, decimal points, percentages, signs, date/time order, selector choices, and rounding. For important decisions, verify the result against an independent source or qualified professional when appropriate.