Calculator Strength
One-rep max calculator
Your one-rep max (1RM) is the most weight you could lift for a single rep. You don’t have to actually test it — enter a set you’ve done and this estimates your 1RM with the Epley formula, then gives you the training percentages to program from.
Estimated one-rep max
0lb
Training percentages
| % of 1RM | Weight | Typical reps |
|---|
An estimate for programming, not a guarantee. Warm up, use a spotter for heavy lifts, and
stop if a movement hurts.