How Strong Are You Really?
Most people train without ever knowing their actual strength level. They guess weights, repeat the same routines, and hope for progress. That works—for a while. Then progress stalls.
Your one-rep max (1RM) changes that.
It gives you a clear benchmark: the maximum weight you can lift for a single repetition. From there, everything becomes more precise—your training loads, your progression, and your results.
But testing a true 1RM isn’t always practical. It can be time-consuming, fatiguing, and in some cases, risky—especially if your technique isn’t solid yet.
That’s where this calculator comes in.
How to use it
Enter the weight you lifted and the number of reps you performed. You’ll get an estimated 1RM range based on three proven formulas — Epley, Brzycki, and Lombardi — giving you a realistic picture of your strength.
1RM Calculator
Estimate your maximum strength
Accuracy is highest with 1–10 reps. Higher rep sets increase the margin of error.
Why This Matters
Once you know your estimated 1RM, your training becomes intentional:
- 70% range → build muscle and volume
- 80–85% range → develop strength
- 90%+ range → peak strength and performance
Instead of randomly choosing weights, you now train with purpose.
A Quick Reality Check
This is still an estimate. Accuracy is highest when using 1–10 reps.
Higher reps? The margin of error increases.
But even then, this is far more useful than training blind.
What Most People Get Wrong
They chase fatigue instead of progress.
They lift hard—but not smart.
Strength isn’t about doing more.
It’s about doing the right load, consistently, over time.
Want to Take It Further?
A number is just a starting point.
If you want to:
- Increase your strength safely
- Fix weak links in your movement
- Follow a structured, progressive plan
Then it’s time to move beyond the calculator.
Book an assessment and we’ll map out exactly how to improve this number—step by step.