One-Rep Max Calculator aka 1RM calculator, is a tool to estimate the maximum weight a user can lift for one rep, based on the weight they can lift for a given number of reps.
1RM Calculator
The Epley formula is used to estimate the one-rep max (1RM):
![\[ \text{1RM} = \text{Weight} \times \left( 1 + \frac{\text{Reps}}{30} \right) \]](https://bushmanfitness.com/wp-content/ql-cache/quicklatex.com-5ac73dfdc6153210fb5786894a788ec6_l3.png "Rendered by QuickLaTeX.com")
Where:
Weight: The weight you can lift for multiple repetitions
Reps: The number of repetitions performed with that weight