Reference · 48 cells
One-Rep Max by Reps and Weight Lifted
This table shows the estimated one-rep max — the average of six published formulas — for each combination of reps performed (2–10) and weight lifted (40–180 kg). For example, lifting 100 kg for 6 reps estimates a 1RM of about 119.1 kg.
Every value below is computed live from the One-Rep-Max calculator engine. Read the methodology for how the six formulas combine, the formula breakdown, or how to test your 1RM safely.
1RM grid: reps rows × weight columns
| Reps \ kg | 40 | 60 | 80 | 100 | 120 | 140 | 160 | 180 |
|---|---|---|---|---|---|---|---|---|
| 2 | 42.5 | 63.7 | 85 | 106.2 | 127.5 | 148.7 | 170 | 191.2 |
| 3 | 43.8 | 65.8 | 87.7 | 109.6 | 131.5 | 153.5 | 175.4 | 197.3 |
| 4 | 45.1 | 67.7 | 90.3 | 112.8 | 135.4 | 158 | 180.5 | 203.1 |
| 6 | 47.7 | 71.5 | 95.3 | 119.1 | 143 | 166.8 | 190.6 | 214.4 |
| 8 | 50.2 | 75.3 | 100.4 | 125.5 | 150.6 | 175.7 | 200.8 | 225.9 |
| 10 | 52.8 | 79.2 | 105.6 | 132.1 | 158.5 | 184.9 | 211.3 | 237.7 |
Cells are the estimated one-rep max in kg (mean of the Epley, Brzycki, Lombardi, Mayhew, Wathen and Lander formulas). The same weight estimates a higher 1RM the more reps it was lifted for; fewer reps tracks closer to the load itself.
Provenance
- Engine
- One-Rep-Max Calculator (one-rep-max-calculator)
- Source
- Computed live from /engines/one-rep-max-calculator.js
- Axis A (rows)
- Reps performed: 2, 3, 4, 6, 8, 10
- Axis B (columns)
- Weight lifted: 40, 60, 80, 100, 120, 140, 160, 180 kg
- Grid size
- 6 × 8 = 48 cells
- Headline metric
- average estimated 1RM (kg)
- CSV columns
- per-formula 1RM, average, training maxes (90% / 85%)
- Last computed
- 2026-05-23
Generation note: the engine is deterministic — no wall-clock, 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.
Run your own numbers