Katch-McArdle BMR Calculator
This calculator uses the Katch-McArdle formula to estimate your Basal Metabolic Rate (BMR) based on your lean body mass. It’s a more accurate method for athletes and individuals with known body fat percentage, helping tailor calorie intake for fat loss, maintenance, or muscle gain.
Katch-McArdle Calculator
Katch-McArdle BMR Formula
Explanation:
Unlike other formulas, Katch-McArdle uses lean body mass instead of total body weight, providing better precision for individuals with high muscle mass or low body fat.
Katch-McArdle – Calculation Example
- Weight: 75 kg
- Body Fat %: 18%
- Lean Body Mass = 75 × (1 − 0.18) = 61.5 kg
- BMR = 370 + (21.6 × 61.5) = 370 + 1328.4 = 1698.4 kcal/day
The Katch-McArdle formula is considered more accurate than weight-based BMR equations because it uses lean body mass. It’s especially useful for athletes and fitness-conscious individuals who want to fine-tune their diet and energy intake. Once calculated, you can multiply BMR by an activity factor to get TDEE (Total Daily Energy Expenditure).