Available tools
Use estimates carefully
These tools calculate from the inputs supplied; they do not assess exercise technique, injury risk, readiness or medical suitability. Adjust training with qualified guidance where appropriate.
Quick reference
| Calculation | Formula | Example |
|---|---|---|
| BMI | weight (kg) / height (m)² | 70 kg, 1.75 m: 22.9 |
| One-rep max (Epley) | weight × (1 + reps / 30) | 100 kg × 5 reps: 116.7 kg |
| Pace to speed | 60 / pace (min per km) | 5:00 min/km = 12 km/h |
| Marathon finish time | 42.195 km × pace | 5:00 min/km: 3 h 31 min |
These figures are population-level estimates. BMI does not distinguish muscle from fat, one-rep-max formulas are least accurate above about ten repetitions, and calorie estimates can differ from measured energy use by several hundred calories a day. Use them to track change over time rather than as a diagnosis, and talk to a health professional for medical advice.