Calorie Calculator (TDEE)
Calorie calculator that estimates your TDEE, the calories you burn per day, plus targets for losing or gaining weight at your activity level.
Formula
TDEE = BMR × activity factor
Use it from the API
curl "https://moltcalc.com/api/calc/calorie?units=metric&sex=male&age=30&weight=70&height=175&activity=1.55"
See the API docs for every endpoint and the input schema.
FAQ
How many calories should I eat a day?+
Start from your maintenance calories (TDEE), the amount that keeps your weight stable. Eat below that number to lose weight and above it to gain; the calculator shows targets 500 kcal either side of maintenance.
What is TDEE?+
Total daily energy expenditure is all the calories you burn in a day. It is estimated by computing your BMR with the Mifflin-St Jeor equation and multiplying by an activity factor from 1.2 (sedentary) to 1.9 (very active).
Why 500 calories for weight loss?+
A deficit of about 500 kcal per day adds up to roughly 3,500 kcal a week, which corresponds to losing around one pound (0.45 kg) of body weight. It is a common, sustainable starting point rather than an exact law.