TDEE Calculator
Results are estimates only and may not reflect your individual needs. This tool is for educational purposes only and is not medical advice.
Estimate your Total Daily Energy Expenditure (BMR × activity level).
Your result will appear here
Complete the form and press Calculate TDEE.
Estimated result
These estimates are for educational purposes only and are not medical advice.
Why use this calculator
Your TDEE is the most practical number for setting a calorie target: eat below it to lose fat, above it to gain muscle, or at it to maintain. Unlike BMR alone, TDEE accounts for how active you actually are — making it the number you should plan your diet around.
How to use this calculator
Enter your age, sex, height, and weight, then choose your activity level. Select Metric or Imperial units first. Press Calculate to see your estimated BMR and TDEE.
What the result means
BMR is estimated using the Mifflin-St Jeor equation. TDEE multiplies that BMR by an activity factor reflecting how much you move in a typical week, from sedentary to extra active.
Important limitations
This calculator provides a population-level estimate. It does not account for medical conditions, medications, body composition, or day-to-day variation in activity.
FAQ
What's the difference between BMR and TDEE?
BMR is the energy your body uses at complete rest. TDEE adds your daily activity on top of that.
Which activity level should I choose?
Pick the option that best reflects your typical week, not an especially active or inactive day.
Can I use imperial units?
Yes — switch to Imperial in the calculator to enter your height in feet and inches and your weight in pounds.
Why do I need to enter my age?
Age affects metabolic rate and body composition. The formulas used here are validated for adults (18+). Child and teen calculations require different growth-adjusted reference ranges not covered by this tool.
These estimates are for educational purposes only and are not medical advice. They are not intended for children, teens, pregnancy, eating disorder recovery, or medical conditions.