To find your 3 rep max, multiply your one rep max (1RM) by 0.93.
Formula:
Contents
3RM = 1RM × 0.93
Table of Variables
| Variable | Meaning |
|---|---|
| 3RM | Three Rep Max |
| 1RM | One Rep Max |
What is a 3 Rep Max Calculator?
Let’s say you’re in the gym, standing over the barbell, psyching yourself up for a heavy set. You’ve done your one rep max before — that one all-out lift you managed with every ounce of strength. But now, you’re wondering: How much weight should I aim for if I want to lift it three times instead of once? That’s where the 3 Rep Max Calculator steps in.
This calculator takes your one rep max and gives you a safe, smart estimate of how much you can lift for three solid reps. No guesswork, no ego lifts — just a quick way to calculate your limits, whether it’s for bench press, squat, or deadlift. It’s great for anyone following strength programs like 5/3/1 or looking to transition between rep ranges. You can also flip the math — if you know your 3 rep max, it can help you estimate your 1 rep max too.
So the next time you’re wondering, “What should my 3 rep max be?” or comparing your 3RM to 1RM, this tool saves you from the trial and error. No need to fail under a bar just to learn your limits — let the math do the heavy lifting first.
