Calorie Calculator
Estimate daily calorie needs from age, weight, height, gender, activity level and goal.
Activity Level
What is a Calorie Calculator
A Calorie Calculator estimates how many calories your body needs each day based on your age, gender, height, weight, activity level and fitness goal. It helps plan nutrition for maintenance, weight loss or weight gain.
Calorie Formula
Calories (TDEE) = BMR × Activity Multiplier
Women: BMR = (10 × Wt) + (6.25 × Ht) − (5 × Age) − 161
Loss = TDEE − 500 · Gain = TDEE + 500
Calorie Calculation Example
Plan meals around a clear calorie target
Supports weight loss or muscle gain goals
Includes macro split suggestions
Adapts to your daily activity level
Sedentary × 1.2 — little or no exercise
Light × 1.375 — light exercise 1–3 days/week
Moderate × 1.55 — exercise 3–5 days/week
Active × 1.725 · Very Active × 1.9
These calorie estimates are for general informational purposes and are not medical advice. Consult a registered dietitian or doctor before making significant dietary changes.
Frequently Asked Questions
Daily calories (TDEE) are found by calculating BMR with the Mifflin–St Jeor equation and multiplying by an activity factor.
BMR is the energy used at complete rest, while TDEE (maintenance calories) includes daily activity on top of BMR.
A common approach is eating about 500 calories below maintenance per day, but always consult a professional.
They are estimates. Individual metabolism, body composition and activity vary, so use them as a starting point.