Estimate your daily calorie needs (TDEE) from your sex, age, height, weight and activity level. Switch between metric and imperial units.
Informational only — not medical advice. Consult a professional before making big dietary changes.
What is a calorie calculator? A calorie calculator estimates how many calories your body burns in a day — your Total Daily Energy Expenditure (TDEE) — so you can plan to maintain, lose, or gain weight.
First your Basal Metabolic Rate (BMR) is found with the Mifflin-St Jeor equation. For men: BMR = 10 × weight in kg + 6.25 × height in cm − 5 × age + 5. For women: BMR = 10 × weight in kg + 6.25 × height in cm − 5 × age − 161. Your BMR is then multiplied by an activity factor to get your maintenance calories (TDEE).
Sedentary (little or no exercise) is 1.2, lightly active (1 to 3 days a week) is 1.375, moderately active (3 to 5 days) is 1.55, very active (6 to 7 days) is 1.725, and extra active (hard exercise or a physical job) is 1.9.
A deficit of about 500 calories a day from your maintenance level corresponds to roughly one pound of weight loss per week, and a surplus of about 500 calories a day corresponds to roughly one pound of weight gain per week. This is an estimate only — consult a healthcare professional before making big dietary changes.