This calculator estimates your daily calorie needs using the Mifflin-St Jeor equation — the most accurate common formula. It finds your BMR (calories at rest), multiplies by an activity factor to get your TDEE (maintenance calories), then subtracts or adds ~500 kcal for a ~0.5 kg (1 lb) per week change. Values are estimates; adjust based on real-world results.
Add this free calculator to your website — copy & paste the code: