Basal metabolic rate (BMR)
1,737 kcal/day
Mifflin-St Jeor — calories burned at rest
Per week (rest only)
12,161 kcal
Per month (rest only)
52,121 kcal
BMR is calories burned at complete rest. Daily needs are higher once activity is included — try the calorie calculator for TDEE. Not medical or nutrition advice.
Learn more
How this calculator works and what to know before using it
What this calculator does
Calculates basal metabolic rate (BMR) — calories your body burns at complete rest for basic functions.
Understanding your result
BMR is the floor — calories needed if you stayed in bed all day. Your actual daily needs are higher once you account for walking, work, and exercise (see the calorie calculator for TDEE).
How to use it
- Choose units and enter sex, age, weight, and height.
- View estimated BMR in calories per day.
Formula used
Mifflin–St Jeor equation
BMR (male) = 10w + 6.25h − 5a + 5 · BMR (female) = 10w + 6.25h − 5a − 161 · (w in kg, h in cm)
Source. Mifflin and colleagues, American Journal of Clinical Nutrition, February 1990. Men: 10×kg + 6.25×cm − 5×years + 5. Women: 10×kg + 6.25×cm − 5×years − 161. The result is kilocalories per day at rest. PubMed 2305711.
Updated November 1, 2026
Example
A 30-year-old male at 170 lb and 5'10" has a BMR of about 1,737 kcal/day.
Good to know
- Uses the Mifflin-St Jeor equation — widely used in clinical settings.
- BMR is lower than total daily needs once activity is included.
Common questions
- What is BMR used for?
- BMR helps estimate minimum daily calorie needs and is a starting point for meal planning, weight loss, or weight gain targets.
- Why is my BMR different from total calorie needs?
- BMR covers rest-only functions. Total daily expenditure adds calories burned through all daily movement and exercise.
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