Calorie Burn & TDEE Tracker
Estimate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE / maintenance calories) using the Mifflin-St Jeor formula.
What TDEE actually adds together
Total Daily Energy Expenditure combines your basal metabolic rate — calories burned at rest, estimated here using a standard formula like Mifflin-St Jeor — with an activity multiplier for exercise and daily movement.
Why the number needs revisiting over time
TDEE isn't fixed. It shifts as your weight, muscle mass, and activity level change, and the body also adapts somewhat during a sustained calorie deficit or surplus — a number that fit three months ago may need recalculating today.