TDEE Calculator (Mifflin-St Jeor)
A TDEE calculator estimates your Total Daily Energy Expenditure — the calories you burn per day — using the Mifflin-St Jeor equation and an activity factor.
Enter your details below to see your BMR, maintenance calories, a gentle cut, and a lean-gain target. This is a math tool only and does not recommend a diet or protocol.
Educational Math Tool Only
This calculator is provided for educational and informational purposes only. It estimates energy expenditure based on the information entered by the visitor using a standard formula. It does not provide medical advice, recommend a diet, establish a protocol, or determine what is appropriate for any person. Always consult a qualified healthcare professional before making health-related decisions.
Frequently Asked Questions
What is TDEE?
TDEE is Total Daily Energy Expenditure: roughly how many calories you burn in a day, including activity. It equals your BMR multiplied by an activity factor.
Which formula is used?
The Mifflin-St Jeor equation, widely regarded as one of the most accurate formulas for estimating BMR.
How do I choose an activity level?
Pick the option that best matches your typical week, from sedentary with little or no exercise up to athlete-level training twice a day. This is only an estimate.
Is this calculator medical advice?
No. This is an educational math tool only. It does not recommend diets, supplements, or treatment protocols.
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