Fitness Suite

BMR Calculator

Calculate your Basal Metabolic Rate (BMR)—the calories your body needs to maintain basic functions at rest.

Gender

Age (Years)

Height (cm)

Weight (kg)

Mifflin-St Jeor

1,639 kcal

Revised Harris-Benedict

1,701 kcal

Estimated Active Maintenance Calories (Mifflin BMR base):

Sedentary (Little to no exercise) 1,967 kcal/day

Lightly Active (Exercise 1-3 days/wk) 2,254 kcal/day

Moderately Active (Exercise 3-5 days/wk) 2,540 kcal/day

Very Active (Exercise 6-7 days/wk) 2,827 kcal/day

Extra Active (Hard labor / athlete) 3,114 kcal/day

What is the BMR Calculator?

Your Basal Metabolic Rate (BMR) represents the total number of calories your body needs to perform basic, life-sustaining functions (like breathing, cell production, and nutrient processing) while completely at rest. Understanding your BMR is the very first step in crafting any weight loss or muscle gain meal plan.

How It Works (Formula)

We calculate your resting metabolism using the globally recognized Mifflin-St Jeor equation, which clinical studies have proven to be the most accurate predictive formula for adults.

$$ \text{BMR (Men)} = (10 \times \text{weight}) + (6.25 \times \text{height}) - (5 \times \text{age}) + 5 $$

The Mifflin-St Jeor equation estimates daily resting calorie needs.

How to Use It

Select your gender, input your current age, height, and body weight. The tool will instantly provide the absolute minimum number of calories you need per day just to survive. You can then multiply this by your daily activity level to find your total daily energy expenditure (TDEE).