Units
kg
cm
years
Medical disclaimer
This tool is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for interpretation of your results.
From estimate to evidence
A formula estimates energy use. A blood test measures metabolic markers such as thyroid hormones, blood sugar and lipids.
Key points
- Uses the revised Harris-Benedict equation (Roza & Shizgal, 1984) to estimate basal metabolic rate
- BMR is the number of calories your body burns at complete rest to maintain vital functions like breathing, circulation, and cell production
- Select your sex for a personalised estimate. The equations differ because males typically have greater lean mass
- The full TDEE breakdown shows calories for each activity level from Sedentary (×1.2) through Extra Active (×1.9)
- BMR decreases with age, roughly 1-2% per decade after 20, which is one reason caloric needs change over time
Quick Facts
- Category
- Metabolism
Related Converters
Medical disclaimer
This tool is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for interpretation of your results.
Measure metabolic markers
A blood panel covering thyroid, blood sugar and lipid markers, analysed and explained.