w × r^0.1 — A power formula that tracks close to Epley early, then starts doing something more surprising as reps rise.
Strength levels for a 200lb male, age 30 lifting 264lb in each lift type · enter your details.
Lombardi algorithm
| Reps | Weight (lb) |
|---|---|
| 1RM | 264lb |
| 2RM | 246lb |
| 3RM | 237lb |
| 4RM | 230lb |
| 5RM(current) | 225lb |
| 6RM | 221lb |
| 7RM | 217lb |
| 8RM | 214lb |
| 9RM | 212lb |
| 10RM | 210lb |
| 20RM | 196lb |
Based on 264lb estimated max
| Intensity | Weight (lb) |
|---|---|
| 100% | 264lb |
| 95% | 251lb |
| 90% | 238lb |
| 85% | 224lb |
| 80% | 211lb |
| 75% | 198lb |
| 70% | 185lb |
| 65% | 172lb |
| 60% | 158lb |
| 55% | 145lb |
| 50% | 132lb |
Input: Input set: 225 lb x 5 reps
Calculation: Formula: 225 x 5^0.1 = 264.2
Result: Estimated 1RM: 264 lb
Lombardi is quick to compute and often lands near Epley, so it works well as a fast cross-check rather than a sole answer.
Lombardi is useful because it does not stay boring for long. It often sits near Epley on low reps, then starts separating as the rep count rises, which makes it a great formula for spotting where your estimate becomes formula-sensitive.
Lombardi uses a power relationship instead of a simple linear step-up per rep, so the estimate changes shape as reps increase. That is why it can look familiar at low reps and noticeably different once the set gets longer.
Lombardi often lands reasonably close to the more familiar formulas on low reps, which makes it a useful cross-check. Its real value is seeing how far it drifts once you move away from heavy triples, fours, and fives.
