ToolPlug Logo ToolPlug

One Rep Max (1RM) & Percentage Training Calculator

Calculate estimated One Rep Maximum (1RM) using Epley and Brzycki equations, with a complete working weight percentage breakdown (50% to 95%).

Inputs used by this tool

Enter values in the interactive controls when the page loads. The result depends on the assumptions and units shown for each field.

Input type: number
Input type: select
Input type: number

Data handling varies by tool. Review its notes and the Privacy Policy before entering sensitive information.