HEALTH TOOL
Calorie Calculator (BMR & TDEE)
Estimate daily calorie needs based on age, sex, height, weight, and activity level.
Maintenance calories (TDEE)
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Base rate at rest (BMR)
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About this tool
This estimates two numbers: your Basal Metabolic Rate (BMR) — the energy your body uses at complete rest — and your Total Daily Energy Expenditure (TDEE), which adds your activity level on top. TDEE is a common starting point people use as their "maintenance calories," the amount that roughly keeps weight stable.
This is a general estimate based on population averages, not a personalized medical or nutritional assessment. If you have specific health or nutrition goals, it's worth discussing them with a doctor or registered dietitian who can account for your individual situation.
Frequently asked questions
- What formula is used?
- The Mifflin-St Jeor equation, a widely used and reasonably accurate BMR formula that takes weight, height, age, and sex into account.
- Why does the formula ask for sex?
- The Mifflin-St Jeor equation uses a different constant for men and women because average body composition differs between the two, which affects resting energy use.
- Is TDEE the same as a calorie target?
- TDEE is an estimate of maintenance calories, not a prescription — it's simply a reference point. Any decisions about calorie targets are best made with guidance from a healthcare provider.