EasyFilesConverter

One rep max calculator

Estimate your one-rep max from the weight and reps you lifted, with training loads from 60% to 95%.

Free · No sign-up · Your files are processed on your device and never uploaded
How to use One rep max calculator
  1. Fill in a few fields…
    1
    Paste or type
    Put your content in the box - or try the example.
  2. Result appears instantly
    2
    Watch the result
    Pick the options you want - the defaults suit most files.
  3. TXTCopy the result
    3
    Download the result
    Ready in seconds. Your file never left your device.
Features
  • Answer updates as you type.
  • Clear breakdown you can copy.
  • Works on phone and desktop.
Free and private
The calculation runs in your browser. Nothing you type is sent or stored, and there is no limit.
Questions
Is it accurate?
Most accurate for 2-10 reps; very high reps over-estimate.
Is it free?
Yes - free and unlimited, with no sign-up and no watermark.
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