Basal Metabolic Rate Calculator (BMR)
Calculate your basal metabolic rate to know the calories your body needs at rest.
Mifflin-St Jeor Formula
10W + 6.25H - 5A + 5
W = weight, H = height, A = age
1618
kcal/day
Normal metabolism
kcal/hour
0
kcal/week
0
TDEE by activity level
Sedentary
Little or no exercise
1941
kcal/día
Light activity
Light exercise 1-3 days/week
2224
kcal/día
Moderate activity
Moderate exercise 3-5 days/week
2507
kcal/día
Active
Intense exercise 6-7 days/week
2790
kcal/día
Very active
Very intense exercise, physical work
3073
kcal/día
What is BMR?
BMR (Basal Metabolic Rate) is the amount of energy your body needs to maintain its vital functions at complete rest: breathing, circulation, temperature regulation, and basic cellular functions.
How is it calculated?
We use the Mifflin-St Jeor equation, currently considered the most accurate. For men: (10 × weight) + (6.25 × height) - (5 × age) + 5. For women: (10 × weight) + (6.25 × height) - (5 × age) - 161.
Factors affecting BMR
Your BMR is influenced by age (decreases with years), gender (men typically have higher BMR), muscle mass (more muscle = higher BMR), genetics, and hormonal status. Fever and stress can also temporarily increase it.