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Calctive

Calorie Calculator

Calculate your daily calorie needs (TDEE) and get personalized nutrition targets based on the Mifflin-St Jeor equation for optimal health and fitness results.

Input Values

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🍎Health Tips

  • •These calculations are estimates - individual needs may vary
  • •Consult a healthcare professional before making major dietary changes
  • •Track your progress and adjust calories based on real-world results

Results

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Enter values and calculate

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How to Use

  1. 1Select your gender using the toggle buttons
  2. 2Enter your age, weight, and height
  3. 3Choose your activity level from sedentary to extremely active
  4. 4Select your goal: weight loss, maintenance, or weight gain
  5. 5Click Calculate to see your personalized calorie and macro targets
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Formula

Mifflin-St Jeor Equation:  Men: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age + 5 Women: BMR = 10 × weight(kg) + 6.25 × height(cm) - 5 × age - 161  TDEE = BMR × Activity Multiplier Target Calories = TDEE ± Goal Adjustment (±500 cal)
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Common Use Cases

30-year-old male, 70kg, 175cm, moderately active wanting to maintain weight
25-year-old female, 60kg, 165cm, lightly active aiming for weight loss
Athlete with extreme activity level planning for muscle gain
Compare different activity levels to see calorie variations