Calorie Calculator - Daily Calories & TDEE
Estimate daily maintenance calories, BMR, and gradual weight-loss or weight-gain targets from age, sex, height, weight, and activity level.
Estimate Daily Calorie Needs
This calculator estimates basal metabolic rate with the Mifflin-St Jeor equation, then applies an activity factor to estimate total daily energy expenditure (TDEE). The result is a planning estimate, not a direct measurement of metabolism.
Maintenance, gradual-loss, and gradual-gain values can help frame a nutrition plan, but individual needs vary with health, body composition, medications, pregnancy, training, and other factors. Adults with medical or nutritional concerns should seek qualified advice.
Frequently Asked Questions
- What is TDEE?
- Total daily energy expenditure is an estimate of the calories your body uses in a day, including basic functions and an activity allowance.
- Which calorie formula is used?
- The calculator uses the Mifflin-St Jeor equation for estimated BMR and multiplies it by a selected activity factor to estimate maintenance calories.
- How accurate is a calorie calculator?
- It is a starting estimate. Real needs can differ because activity reporting, muscle mass, health, medication, sleep, and metabolism vary between people.
- Should I eat exactly the displayed number?
- Not necessarily. Use the estimate as context, monitor real outcomes over time, avoid extreme restriction, and seek qualified advice when health or nutrition concerns apply.