REFERENCE MATRIX
Interactive 1RM Chart
A live, filterable One Rep Max matrix table. Customize weight ranges, search working sets, or print a pocket cheat sheet.
| Weight Lifted | 2 Reps | 3 Reps | 4 Reps | 5 Reps | 6 Reps | 8 Reps | 10 Reps |
|---|
GUIDE
How to Use a 1RM Matrix Chart
A 1RM chart allows you to bypass manual calculations during your training session. Simply cross-reference your working set to immediately read your estimated maximal strength.
Percentage Correlation Summary
- 2 Reps: ~97% of 1RM — Highest predictive accuracy.
- 5 Reps: ~89% of 1RM — Benchmark powerlifting working set.
- 8 Reps: ~80% of 1RM — Hypertrophy compound load.
- 10 Reps: ~75% of 1RM — Standard endurance boundary.
FAQ
Frequently Asked Questions
Answers regarding 1RM charts and print formats.
Find the row with your completed working weight on the left, then look under the column corresponding to your completed reps. That intersection is your estimated 1RM.
The chart uses the Epley formula: 1RM = Weight × (1 + Reps / 30), which is standard in exercise physiology textbooks.