TDEE Tool
TDEE Calculator with Body Fat %
Get a more accurate TDEE estimate by entering your body fat percentage, which enables the Katch-McArdle formula.
TDEE Calculator with Body Fat Percentage
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Your TDEE
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FAQ
Frequently Asked Questions
Lean body mass is the primary driver of metabolic rate. When you provide your body fat percentage, the Katch-McArdle formula calculates BMR based on lean mass rather than total weight, giving a more accurate estimate.
Common methods include skinfold calipers, bioelectrical impedance scales, DEXA scans, and the Navy body fat formula. DEXA is the gold standard, while calipers offer a practical at-home option.
The Katch-McArdle formula estimates BMR using lean body mass: BMR = 370 + (21.6 x lean mass in kg). It is especially useful for athletic individuals with above-average muscle mass.