Calorie Calculator
Estimate daily calorie needs from your BMR and activity level.
Daily calorie needs
Maintenance calories
2,556 kcal/day
BMR 1,649 kcal x 1.55 activity factor
For estimation purposes only — not financial, medical, or professional advice.
How to use this calculator
- 1Enter weight, height, age and sex.
- 2Choose the activity level that best matches a typical week.
- 3Read your estimated daily calorie needs and the underlying BMR.
How it's calculated
First the calculator finds BMR with Mifflin-St Jeor: 10 x weight(kg) + 6.25 x height(cm) - 5 x age, then +5 for men or -161 for women.
BMR is then multiplied by an activity factor: sedentary 1.2, lightly active 1.375, moderately active 1.55, active 1.725, very active 1.9.
The result is your Total Daily Energy Expenditure — roughly the calories needed to maintain your current weight.
Calorie Calculator FAQs
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