Health & Fitness Tools
Body metrics, energy balance, hydration and pace calculators using published formulas, with the assumptions stated openly.
Built for runners, gym-goers, general public. 6 tools published.
A1C to eAG
Apply the published ADAG relationship to A1C reported as a percentage.
🏃BMI Calculator
Your BMI, your category, the healthy weight range for your height — and an honest account of the four situations where BMI gives the wrong answer about you.
🏃Body Surface Area
They agree closely on an average build and diverge at the extremes, because most were fitted on small samples of average people.
🏃TDEE Calculator
Mifflin-St Jeor BMR with activity levels described by what your week actually looks like, not by adjectives. Includes a deficit planner and the error range stated openly.
🏃Waist to Height Ratio
Keep your waist under half your height. One measurement, one division, and in most published comparisons a better predictor of risk than BMI.
🏃Waist-to-Hip Ratio
It is a ratio, so large hips hide a large waist. And one centimetre of tape placement moves the result by 0.01 — a category is only about 0.05 wide.