Inputs
Live updatesEnergy expenditure panel
Add age, sex, body metrics, and activity level to estimate TDEE.
This uses the Mifflin-St Jeor equation and an activity multiplier to estimate total daily energy needs.
Health toolTDEE estimate
TDEE Calculator
Use this page to estimate how much energy your body uses in a normal day, including your activity level.
What you will get
Clear input, result, and explanation in one place
TDEE estimate
The result shows total daily energy expenditure and the BMR behind it.
This uses the Mifflin-St Jeor equation and an activity multiplier to estimate total daily energy needs.
Calculator
Enter your values and review the live result
Result
TDEE estimate
The result shows total daily energy expenditure and the BMR behind it.
Current estimate
$2,693 per day
Estimated total daily energy expenditure using a 1.55 activity factor.
Supporting details
- BMR: $1,738
- Activity factor: 1.55
Explanation
How it works
TDEE is easier to use when the basal metabolic rate and activity factor are both visible, because the final number then has context.
Audience
Who should use this
Enter your current metrics, choose the activity level that best matches your routine, and compare the output with your current intake.
Common questions
How is this different from the calorie calculator?
This page is more explicit about TDEE and uses the activity multiplier as the key planning input.
Can I use it to build a calorie target?
Yes. The TDEE output is a practical reference point before you set maintenance, deficit, or surplus goals.
Helpful guide
When BMI is enough, and when body fat is more useful
A simple guide to choosing between BMI, body-fat estimates, sleep timing, and training zone tools.
Read guideRelated tools
Health
Calorie Calculator
Estimate daily calorie needs from age, height, weight, sex, and activity level in a clean health tool layout.
OpenHealth
Calorie Deficit Calculator
Estimate daily intake targets and potential weight change from a chosen calorie deficit.
OpenHealth
Body Fat Calculator
Estimate body fat percentage from height and body measurements using a transparent circumference-based formula.
Open