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How much should you eat?

Your TDEE (total daily energy expenditure) is how many calories you burn in a day. Start here, then adjust for your goal.

Sex

The formula uses this because bodies differ in average muscle mass.

Goal

Fill in your details and your numbers show up here.

How this calculator works

We use the Mifflin-St Jeor equation, the formula many dietitians reach for first. It estimates your resting burn (BMR) from your weight, height, age and sex. Then we multiply by an activity factor to get your TDEE.

Every formula is an estimate. Track your weight for two to three weeks. If it moves differently than expected, adjust by 100 to 200 calories and check again.

This tool is for healthy adults. If you're pregnant, breastfeeding, under 18 or managing a medical condition, talk to a doctor or registered dietitian first.

Read the full guide to TDEE →