Iron Raven · Tools
1RM Calculator
Estimate a max from any hard set — weight × reps, optional RPE — with predicted rep maxes. Uses the same estimate as the in-app strength charts.
Max estimates that match your charts
- Estimate a one-rep max from weight and reps, with optional RPE
- See predicted rep maxes so you can plan working sets with intent
- Same estimate method used in Iron Raven strength trend charts
- Works in kilograms or pounds
- Part of the Library calculator toolkit alongside plate, RPE, and points tools
Also in the toolkit: plate calculator, RPE chart, points calculator .
Start Your Free Trial
iOS, Android, and web — try program generation and session readiness free
