Free tool
1RM and RIR target calculator
Turn a set you have already completed into an estimated one-rep max and a table of working weights by reps in reserve.
A set you have already done
Estimated one-repetition maximum
80 kg
| Reps | 0 RIR | 1 RIR | 2 RIR | 3 RIR |
|---|---|---|---|---|
| 3 | 72.7 kg | 70.6 kg | 68.6 kg | 66.7 kg |
| 5 | 68.6 kg | 66.7 kg | 64.9 kg | 63.2 kg |
| 8 | 63.2 kg | 61.5 kg | 60 kg | 58.5 kg |
| 10 | 60 kg | 58.5 kg | 57.1 kg | — |
| 12 | 57.1 kg | — | — | — |
Uses the Epley equation, counting reps in reserve as reps you could have done — the same load model the Bodywise Coach app uses. It is only an estimate from a set you have already completed, not a test of your maximum; a dash means the combination is outside the range the equation is reliable over. Round to the nearest weight your equipment allows.
Educational information for adults aged 18 and over. It does not diagnose, treat or manage any medical condition. If you have a health condition, or symptoms that worry you, speak to your doctor or a health professional.