Reference table, 42 figures
FFMI by bodyweight and body-fat percentage
This table shows the fat-free mass index (FFMI) for a 180 cm person at each bodyweight (60–110 kg) and body-fat percentage (8–32%). For example, a 90 kg body at 12% fat scores an FFMI of 24.4 — “Excellent — advanced trainee”.
Every value below is computed live from the FFMI calculator engine. Read the methodology for the height-normalisation, where the natural FFMI ceiling sits, or how FFMI compares to BMI and body fat.
FFMI grid: bodyweight rows × body-fat columns
FFMI at 180 cm. Rows: bodyweight (kg). Columns: body fat (%).
| kg \ BF% | 8 | 12 | 16 | 20 | 24 | 28 | 32 |
|---|---|---|---|---|---|---|---|
| 60 | 17.0 | 16.3 | 15.6 | 14.8 | 14.1 | 13.3 | 12.6 |
| 70 | 19.9 | 19.0 | 18.1 | 17.3 | 16.4 | 15.6 | 14.7 |
| 80 | 22.7 | 21.7 | 20.7 | 19.8 | 18.8 | 17.8 | 16.8 |
| 90 | 25.6 | 24.4 | 23.3 | 22.2 | 21.1 | 20.0 | 18.9 |
| 100 | 28.4 | 27.2 | 25.9 | 24.7 | 23.5 | 22.2 | 21.0 |
| 110 | 31.2 | 29.9 | 28.5 | 27.2 | 25.8 | 24.4 | 23.1 |
Cells are FFMI (kg/m²) at a fixed 180 cm height. For the same bodyweight, a lower body-fat percentage means more lean mass and a higher FFMI. Values around 25 sit at the commonly cited drug-free ceiling for this height.
How the table is made
- Engine
- FFMI Calculator (ffmi-calculator)
- Source
- Computed live from /engines/ffmi-calculator.js
- Rows
- Bodyweight: 60, 70, 80, 90, 100, 110 kg
- Columns
- Body fat: 8, 12, 16, 20, 24, 28, 32 %
- Fixed inputs
- height = 180 cm
- Size
- 6 × 7 = 42 cells
- Each figure
- FFMI (kg/m²)
- Grid last changed
- , recomputed on every build
The engine is deterministic, with no clock and no randomness, so each cell reproduces exactly on every build. The full grid is embedded as machine-readable JSON and recomputed by our CI gate against a fresh engine run; the table and CSV are rendered from those same outputs, never hand-entered.