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One Rep Max Calculator

This one rep max calculator helps you estimate your 1 rep max (1RM) from submaximal lifts. Enter the weight and reps you completed to calculate your estimated one-rep maximum using the calculator below.

Calculate Your 1 Rep Max (1RM)

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Looking to test your strength? Strength Origins hosts online strength &  fitness challenges here.

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  • Challenges
    • SBD Club
    • Weighted Pull-Up Club
    • Straight Flush Challenge
    • Challenge of the Month
    • Previous Challenges
  • Standards
    • Strength Standards
      • Powerlifting Standards
      • Squat Standards
      • Bench Press Standards
      • Deadlift Standards
    • Calculators
      • Powerlifting Calculator
      • One Rep Max Calculator
      • RPE Calculator
      • DOTS Calculator
      • Wilks Calculator
  • Leaderboards
  • Shop
  • More
    • About
    • Content
    • Partner with Strength Origins
    • Coaching
    • Newsletter
    • Contact