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BMR Calculator

Basal metabolic rate — calories burned at complete rest — using the Mifflin-St Jeor equation.

Enter values

Results update as you type.

Result

BMR

1,699 kcal/day

Per hour
70.8 kcal
Sedentary needs (×1.2)
2,039 kcal/day
Moderately active (×1.55)
2,633 kcal/day
Step-by-stepShow
  1. BMR = 10×75 + 6.25×175 − 5×30 + 5 = 1,699 kcal

Educational estimate only — not medical advice. Talk to a healthcare professional about your individual situation.

About the BMR Calculator

Basal metabolic rate — calories burned at complete rest — using the Mifflin-St Jeor equation.

Also known as: basal metabolic rate, resting metabolism, calories at rest, metabolism calculator.

How to use this calculator

  1. Enter units, sex, age and the other fields.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Open “Step-by-step” to see how the answer was worked out.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

Mifflin-St Jeor: 10·kg + 6.25·cm − 5·age + 5 (male) / − 161 (female)

Worked example

Using the values pre-filled in the calculator above:

  • Units: Metric (kg, cm)
  • Weight = 75 kg
  • Height = 175 cm
  • Sex: Male
  • Age = 30 years

the calculator returns:

  • BMR: 1,699 kcal/day
  • Per hour: 70.8 kcal
  • Sedentary needs (×1.2): 2,039 kcal/day
  • Moderately active (×1.55): 2,633 kcal/day

Working

  1. BMR = 10×75 + 6.25×175 − 5×30 + 5 = 1,699 kcal

Frequently asked questions

What is the difference between BMR and TDEE?

BMR is what your body burns at complete rest. TDEE multiplies BMR by an activity factor to include movement, exercise and digestion — that is the number to use for diet planning.