Example
Estimate resting energy needs from age, height, weight, and sex used by the equation.
Health
Basal Metabolic Rate Calculator
Estimate adult basal metabolic rate using the Mifflin-St Jeor equation.
● ToolEnter your information below
Estimated BMR1,437 calories/day
Adult estimate using the Mifflin-St Jeor equation; actual energy needs vary. This is not a diet prescription. Source: published Mifflin-St Jeor equation.
For adults only. Entries stay in this page and are not saved or sent to an account.
Local export optionsNever uploaded
Plain-language reference
How this tool gets the answer
What it calculates
Estimate adult basal metabolic rate using the Mifflin-St Jeor equation.
Method
The estimate uses the Mifflin-St Jeor adult equation with age, height, weight, and the selected sex-based equation.
Keep in mind
These adult equations do not diagnose health, account for every body type or circumstance, or replace individualized clinical assessment. This limitation is especially important when using the basal metabolic rate calculator for a consequential or shared decision.
Page owner: Anchor Apps LLC · Calculation and content last verified August 9, 2026.