How this calculator helps
Estimate total daily energy expenditure, which is the approximate energy your body uses across rest, movement and daily activity.
Inputs used
This page uses simple inputs: Age, Sex, Height, Weight, Activity level. Metric and imperial support lets users choose the unit system that fits their country and preference.
Methodology and formula
TDEE is commonly estimated by calculating a resting metabolic rate and multiplying it by an activity factor. The activity factor is a broad estimate, so real-world activity can make results higher or lower.
How to interpret the result
TDEE can be used as a baseline for maintenance, a modest deficit, or a modest surplus. It should be adjusted gradually based on energy, hunger, training and progress trends.
Safety and limitations
TDEE is a general wellness estimate. It does not measure metabolism directly and should not be used as a medical diagnostic tool.
Information on w8t.ai is for general wellness only and is not medical advice.
Frequently asked questions
What does TDEE mean?
TDEE means Total Daily Energy Expenditure, an estimate of the energy you use in a typical day.
Is TDEE the same as BMR?
No. BMR estimates resting energy use, while TDEE includes activity and daily movement.
Why does activity level matter?
Activity level changes daily energy needs. A broad multiplier helps estimate this, but it is not exact.
How should I use my TDEE?
Use it as a starting point, then adjust based on progress over time.