This page uses Matt Brzycki's formula for estimating a 1 rep max given a weight and number of reps, as follows:
1rm = weight / ( 1.0278 – 0.0278 × reps )
This is designed so you can target a particular number of reps given a weight. If you want to see estimated rep maxes for a given weight and number of repetitions, see Strength Level.
| Reps | Estimated 1RM | % of 1RM |
|---|