How It Works
For repetitions >1, estimated 1RM=load×(1+reps/30). A one-repetition input returns the entered load.
Only 1–10 repetitions are supported to avoid large extrapolations. The estimate is not a recommendation to attempt the displayed load.
Reference Sources
FAQs
How does this calculator work?
For repetitions >1, estimated 1RM=load×(1+reps/30). A one-repetition input returns the entered load.
What assumptions should I check?
Only 1–10 repetitions are supported to avoid large extrapolations. The estimate is not a recommendation to attempt the displayed load.