MyCalculatorHow it works
We calculate BMR using the Mifflin-St Jeor equation, then multiply by an activity factor to estimate Total Daily Energy Expenditure (TDEE): TDEE = BMR × Activity multiplier.
Example
A 30-year-old man, 70 kg, 175 cm, moderately active, has a BMR of about 1,674 and an estimated daily need of about 2,594 calories to maintain his current weight.
Assumptions & limitations
This is a population-average estimate, not tailored to your individual metabolism, medical conditions or medications. For weight loss or gain, most people adjust intake up or down from this maintenance estimate — consult a professional for personalized guidance.
Frequently asked questions
Is this how many calories I should eat to lose weight?
This estimates maintenance calories. To lose weight, most people create a modest deficit below this number; to gain, a modest surplus above it.
How accurate is this?
It's a reasonable population-average estimate, but individual metabolism varies — use it as a starting point, not an exact figure.