TDEE.io is a fast and accurate TDEE calculator that helps you estimate your Total Daily Energy Expenditure and daily calorie needs based on your body stats and activity level.
By entering your age, sex, height, weight, and activity level, you can instantly calculate your maintenance calories and get practical targets for fat loss, muscle gain, or weight maintenance.
The calculator uses the proven Mifflin-St Jeor formula to provide reliable estimates, along with helpful guidance for calorie deficits, surpluses, and macro planning.
Designed for simplicity and real-world use, TDEE.io gives you a clear starting point you can adjust over time based on your results. No signup required and completely free to use.
