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One Rep Max Calculator

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Overview

Calculate your One Rep Max (1RM) for Bench Press, Squat, and Deadlift using Epley & Brzycki formulas.

Calculate your One Rep Max (1RM) instantly β€” right from your browser. Whether you're preparing for a powerlifting competition or planning your next training cycle, knowing your true max is essential. This extension helps you estimate your one rep max for Bench Press, Squat, and Deadlift using proven scientific formulas. How It Works: Simply enter the weight you lifted and the number of reps you completed. The calculator uses two time-tested methods (Epley and Brzycki) to give you an accurate estimation. What You Get: πŸ‹οΈ Dedicated modes for Bench Press, Squat, and Deadlift πŸ“ Accurate calculations using Epley and Brzycki formulas πŸ“Š A full percentage breakdown chart for programming your workouts πŸ’Ύ Auto-save feature that remembers your last input Perfect For: - Strength athletes planning training percentages - Lifters tracking progress over time - Coaches programming for clients All data stays on your device β€” we don't collect or transmit any information. Clean, fast, and free.

Details

  • Version
    1.1
  • Updated
    January 6, 2026
  • Size
    724KiB
  • Languages
    English (United States)
  • Developer
    η™½η‰™εΈ‚ι•‡εšι›…ζ–‡δ½“(ε…«θ§’θ‘—εΊ—) ζ°Έε·žεΈ‚, ζΉ–ε—ηœ 425900 CN
    Website
    Email
    hudijiang@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

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