Calorie Calculator
Estimate BMR and daily calorie needs (TDEE)
About This Tool
Estimate your BMR (basal metabolic rate) and daily calorie needs (TDEE) using the Mifflin-St Jeor equation, in metric or imperial units. Results are general estimates for healthy adults and are for information only — not medical or dietary advice; consult a professional before changing your diet.
Frequently Asked Questions
What is the difference between BMR and TDEE?
BMR is the energy your body uses at complete rest. TDEE (total daily energy expenditure) multiplies BMR by an activity factor to estimate what you burn in a normal day.
Which formula does this calculator use?
The Mifflin-St Jeor equation, widely considered the most accurate standard formula for adults: 10×weight(kg) + 6.25×height(cm) − 5×age + 5 (men) or −161 (women).
How many calories should I cut to lose weight?
A common guideline is 500 kcal below maintenance for roughly 0.5 kg per week, without going below about 1200 kcal per day — but individual needs vary, so seek professional advice.
Are these numbers exact?
No. Formulas estimate averages; real needs vary with muscle mass, genetics, and health conditions. Treat results as a starting point, not a prescription.