Calorie Calculator

Calculate your daily calorie needs for weight loss, maintenance, or gain.

Understanding Calorie Needs

Your daily calorie needs depend on your age, gender, size, and activity level. This calculator uses the Mifflin-St Jeor equation, considered the most accurate formula.

Weight Change Guidelines

  • Lose weight: Eat 500 fewer calories for ~1 lb/week loss
  • Gain weight: Eat 500 more calories for ~1 lb/week gain
  • Maintain: Match your TDEE (Total Daily Energy Expenditure)