Rep Max Chart
Enter your one-rep max and get the full chart — estimated 2RM through 15RM, plus %1RM at each rep count. The fastest way to pick a working weight when programming.
Your 1RM
How the chart is built
We use the well-validated %1RM ↔ reps mapping from the National Strength & Conditioning Association (NSCA), refined with RTS data. Each rep count maps to a percentage of 1RM at maximum effort.
Standard %1RM mapping
| Reps | %1RM | Reps | %1RM |
|---|---|---|---|
| 1 | 100% | 8 | 78.6% |
| 2 | 95.5% | 10 | 73.9% |
| 3 | 92.2% | 12 | 68.0% |
| 5 | 86.3% | 15 | 62.6% |
Want to back into a 1RM from a working set instead? Use the 1RM calculator or the RIR calculator for autoregulated work.
FAQ
Are these maxes for fresh sets only?
Yes — the chart assumes a single max-effort set, fully recovered. Backoff sets after a top single will be lower because of fatigue.
Should I leave reps in reserve?
For most training days, yes. Subtract ~3% per RIR — see the RIR calculator.
Why does my actual 5RM feel lighter than the chart says?
%1RM mappings are population averages. Strength endurance varies — some lifters can grind 8 reps at 80%, others tap out at 6. Use the chart as a starting point, then adjust by feel.
Skip the chart entirely.
FitBear prescribes the exact load for every working set, based on your live 1RM trend.
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