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Mifflin-St Jeor BMR Calculator

This calculator estimates your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor Equation. It provides the number of calories your body needs at rest based on your age, gender, weight, and height—essential for weight management and nutrition planning.

Basal Metabolic Rate Estimator

Input Fields
w
kg
Your body weight in kilograms
h
cm
Your height in centimeters
a
years
Your age

Mifflin-St Jeor Equation for BMR

Formula
$$\text{BMR (Men)} = 10 \cdot \text{weight (kg)} + 6.25 \cdot \text{height (cm)} – 5 \cdot \text{age (years)} + 5 \\[10pt] \text{BMR (Women)} = 10 \cdot \text{weight (kg)} + 6.25 \cdot \text{height (cm)} – 5 \cdot \text{age (years)} – 161$$


The Mifflin-St Jeor formula is a widely accepted method to calculate Basal Metabolic Rate (BMR), which is the amount of energy (in calories) your body requires to function at rest. It is more accurate than older methods and is frequently used in nutrition and fitness planning. Knowing your BMR can help you design a personalized diet or workout plan tailored to your metabolic needs.

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