Health

BMR Calculator

Find your Basal Metabolic Rate (Mifflin–St Jeor equation).

Weight

Height

Age (years)

Sex

Calculated Output

BMR (kcal/day) 1,648.75

Formula: 10·kg + 6.25·cm − 5·age + (5 men / −161 women)

Step-by-Step Breakdown

1. Values used:

2. Weight = 70

3. Height = 175

4. Age = 30 years

6. BMR = 1,648.75kcal/day

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The math behind it

Mifflin–St Jeor: BMR = 10 × kg + 6.25 × cm − 5 × age + 5 (men) or − 161 (women).

Male, 70 kg, 175 cm, 30 yrs → 700 + 1,093.75 − 150 + 5 = 1,649 kcal/day.

BMR vs TDEE?

BMR is rest-only; TDEE multiplies BMR by an activity factor to include daily movement and exercise.