BMR Calculator

Calculate your Basal Metabolic Rate (BMR) — the calories your body needs at rest — and your total daily energy expenditure (TDEE).

Runs in browser
BMR (kcal/day)
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TDEE (kcal/day)
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BMR (kcal/day)
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TDEE (kcal/day)
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Mifflin-St Jeor

♂ = 10w + 6.25h − 5a + 5
♀ = 10w + 6.25h − 5a − 161

Most accurate BMR formula for most adults.

How to use?

  1. 1
    Enter your detailsFill in weight, height, age and select gender.
  2. 2
    Choose activity levelSelect how active you are on average.
  3. 3
    Read the resultYour BMR (resting calories) and TDEE (total daily calories) are shown.

FAQ

What is BMR?
BMR (Basal Metabolic Rate) is the number of calories your body needs to maintain basic functions (breathing, circulation, etc.) at complete rest.
What is TDEE?
TDEE (Total Daily Energy Expenditure) is your BMR multiplied by an activity factor. It represents the total calories you burn per day including physical activity.
Which formula is used?
The Mifflin-St Jeor equation (1990) is used — it is the most accurate formula for most adults according to current research.

What Is BMR (Basal Metabolic Rate)?

BMR is the minimum number of calories your body needs to sustain vital functions (breathing, heartbeat, cell repair) while at complete rest. It accounts for 60–75% of total daily calorie burn.

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