Harris-Benedict Calculator (BMR & TDEE)
Estimate your Basal Metabolic Rate using the classic Harris‑Benedict equation. Then see total daily calories based on your activity level.
Step 1: Your Details
Harris‑Benedict Principle
BMR is the calories your body needs at complete rest. Multiplying by activity factor gives total daily energy expenditure (TDEE).
Step 2: Activity & Equation
Activity Multipliers
Sedentary = BMR×1.2
Light = BMR×1.375
Moderate = BMR×1.55
Active = BMR×1.725
Very Active = BMR×1.9
Your Energy Expenditure
Basal Metabolic Rate (BMR)
BMR & TDEE Comparison
| Profile | BMR (kcal) | TDEE (kcal, moderate) |
|---|
Harris‑Benedict Equations
Revised (1984) – most used
Men: BMR = 88.362 + (13.397 × weight kg) + (4.799 × height cm) – (5.677 × age)
Women: BMR = 447.593 + (9.247 × weight kg) + (3.098 × height cm) – (4.330 × age)
Original (1919)
Men: BMR = 66.5 + (13.75 × kg) + (5.003 × cm) – (6.75 × age)
Women: BMR = 655.1 + (9.563 × kg) + (1.85 × cm) – (4.676 × age)
Mifflin‑St Jeor (1990)
Men: BMR = (10 × kg) + (6.25 × cm) – (5 × age) + 5
Women: BMR = (10 × kg) + (6.25 × cm) – (5 × age) – 161
Multiply BMR by activity factor to get TDEE.
Need a custom meal plan?
Our registered dietitians can create a personalized nutrition strategy based on your exact BMR and goals.
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