5/3/1 Estimated One-Rep Max Calculator
Estimated 1 Rep Max

View 1RM percentages

Based on estimated 1RM—not Training Max.

PercentWeight
50%—
55%—
60%—
65%—
70%—
75%—
80%—
85%—
90%—
95%—

A strong set means the plan is working. Do not automatically increase a Training Max from this estimate.

Use technically sound reps only. Estimates are not predictions. Your current training level and genetics are important variables.