KLOORAOne Rep Max Calculator
Estimate your one-rep max from a lighter set using three formulas.
Quick answer: One Rep Max Calculator: Estimate your one-rep max from a lighter set using three formulas. Everything runs in your browser, so nothing you enter is uploaded or stored.
How to use One Rep Max Calculator
- Enter your values in the fields.
- The results update instantly as you type.
- Note or copy the numbers you need.
Features
- Instant results
- Free, no signup
- Runs in your browser, nothing is uploaded
- Works on phone and desktop
Frequently asked questions
What is a one-rep max?
It is the heaviest weight you can lift for a single repetition with good form.
Is it safe to test my real max?
Estimating from a lighter set is safer. Always use a spotter for heavy lifts.
Is the One Rep Max Calculator free?
Yes. It is free, needs no signup and works on any device.