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1-Rep Max Calculator
Estimate your one-rep maximum for any lift.
Frequently Asked Questions
How do I use 1-Rep Max Calculator?▾
Estimate your one-rep maximum for any lift. Enter your details and get an instant estimate.
Is 1-Rep Max Calculator accurate?▾
1-Rep Max Calculator uses widely accepted formulas, but results are estimates. Consult a healthcare professional for medical advice.
Is 1-Rep Max Calculator free?▾
Yes, 1-Rep Max Calculator is free with no sign-up needed.
Is my data private?▾
All calculations happen in your browser — no personal data is stored or sent anywhere.
Does 1-Rep Max Calculator work on mobile?▾
Yes, 1-Rep Max Calculator is mobile-friendly and works on any device.