STRENGTHHUB
Training Tools
1RM & Rep Max Calculator
Enter any set you've done — the weight, the reps, and how many you had left in the tank. It estimates your one-rep max, then works out your loading across every rep range and intensity.
Your set
Estimated 1 rep max
100kg
My saved lifts
By reps
| Reps | Weight | % 1RM |
|---|
Strength 1–5Hypertrophy 6–12Endurance 13+
By intensity
| % of 1RM | Weight |
|---|
These are estimates, not tested maxes. Prediction accuracy is highest at 10 reps or fewer and drops as reps climb.
Best used to guide loading, not to confirm a true 1RM.
Best used to guide loading, not to confirm a true 1RM.