Calorie needs
Enter age, sex, height, weight and an activity level. The page shows BMR and BMR times that activity factor.
- Not medical advice
- Free, no sign-up
This is a standard formula, not medical advice.
Free to use, no account. More everyday tools
How to use it
- Enter age and sex.
- Enter height and weight.
- Pick the activity that matches your usual week.
The equation
Mifflin–St Jeor is 10×kg + 6.25×cm − 5×age, plus 5 for the male option and minus 161 for the female option. The activity multipliers are 1.2, 1.375, 1.55, 1.725 and 1.9. The result is an estimate of energy, not a prescription.
Pregnancy, illness, and a goal to gain or lose weight are not in the formula. A clinician or a dietitian is the right source for those.
Private by design
Privacy
Your details stay in this tab and are not uploaded. This is not medical advice.
Questions
Which activity should I pick?
Sedentary is a desk day. Moderate is exercise on several days. The labels are the usual factors, not a fitness test.
Is BMR what I should eat?
BMR is the estimate before activity. The second line multiplies by the activity factor.
Does it account for muscle?
No. It uses age, sex, height and weight only.