Your estimated one-rep max (1RM) is the most weight Gript predicts you could lift for a single rep, calculated from the weight and reps of your sets — no risky max-out attempt required.
Where you see it
- The Est. 1RM column on sets during a workout.
- The Estimated 1RM chart on the Performance tab (PRO).
- The Best 1RM record on each exercise's detail page.
Pick the formula
Three well-established formulas are supported. Change yours in Workout Settings under Calculations → 1RM Formula:
- Epley — the most common; the default.
- Brzycki — slightly more conservative at higher reps.
- Lombardi — a power-curve alternative.
