1RM Calculator
1RM Calculator for Powerlifting
Powerlifters need accurate 1RM estimates for attempt selection and training planning. This calculator helps you peak appropriately for competition.
Ready to Calculate?
Use our 1rm calculator with these considerations in mind.
Key Considerations
- Competition 1RM may differ from gym 1RM due to conditions and judging
- Use recent training maxes for attempt selection, not all-time PRs
- First attempt should be something you can triple in the gym
- Second attempt is a PR you are confident hitting
- Third attempt is for setting a new personal record
Specific Adjustments
First Attempt
Plan for 88-92% of gym max. Something you could triple easily. Opener should be guaranteed.
Third Attempt
Plan for 100-103% of gym max. This is your PR attempt based on how the day is going.
Tips for Best Results
1Base attempts on recent training, not old PRs
2Account for competition conditions (longer rest, different equipment)
3Have a backup plan if first attempt is harder than expected
4Consider using conservative estimates for meet day
Frequently Asked Questions
How should I pick my opening attempt?
Your opener should be something you can triple on your worst day. Typically 88-92% of your recent gym max. The goal is to get on the board and build momentum.
Why is my gym max different from competition max?
Competition conditions differ: longer warmups, stricter judging (pauses, depth), different equipment, and pressure. Some lifters perform better in competition, others worse.
How do I peak for a powerlifting meet?
Reduce training volume in the final 1-2 weeks while keeping intensity high. Test openers about 1-2 weeks out. The week of the meet, just stay loose and rested.
Related Calculators
More 1RM Calculator Guides
Calculate Your Numbers
Now that you understand the specifics, use our calculator to get your personalized results.
Use 1RM Calculator