Clinicato

BMR calculator: basal metabolic rate and daily calories

Work out the basal metabolic rate with the Mifflin-St Jeor equation and the daily calories by activity level.

For doctors and health professionals

A tool to support the clinical decisions of doctors and health professionals, not for self-diagnosis or self-treatment.

This calculator is inside the patient's file in Clinicato: open it from "Medical tools" while you chart the visit, it fills in from the patient's details and vital signs where they are recorded, and adds its result to the visit's plan in one tap, with the "Medical tools" add-on. Try it in your clinic

Calculator

Medical note: The result supports a clinical decision, it does not replace the doctor's judgement or examining the patient, and is to be checked against your reference before any treatment decision.

How it works and when to use it

Mifflin-St Jeor: 10 × weight + 6.25 × height in cm − 5 × age, then + 5 for men and − 161 for women.

The BMR is multiplied by an activity factor from 1.2 (sedentary) to 1.9 (very active) to estimate daily calories.

Reference: Mifflin MD, St Jeor ST et al. Am J Clin Nutr 1990;51:241-7; activity factors 1.2-1.9 as conventionally applied to predictive equations

Frequently asked questions

What is the difference between BMR and daily calories?

BMR is what the body burns at complete rest, daily calories add activity and movement.

Is the equation accurate for everyone?

It is among the most accurate for adults, but it is an estimate that can differ in very muscular people or severe obesity.

All medical tools

Clinic software for this specialty

Try Clinicato for your clinic

These calculators are free here for everyone, and in Clinicato 49 medical tools work inside the patient's file with the "Medical tools" add-on: filled from the visit and the vital signs, with the result added to the visit's plan, next to appointments, prescriptions and invoices.