[EPLEY & BRZYCKI STRENGTH ALGORITHM]

One Rep Max (1RM) Calculator - Epley & Brzycki Strength Formula

Calculate your one-rep max (1RM) for bench press, squat, and deadlift using proven Epley and Brzycki strength equations with training percentages.

Estimated 1 Rep Max

Average of Epley and Brzycki strength equations

93.3 kg

Percentage of 1RM Training Weights

About One Rep Max (1RM) Calculator - Epley & Brzycki Strength Formula

Scientific, 100% client-side calculator for one rep max calculator. Calculations execute strictly inside your browser sandbox with zero telemetry or network calls.

Supported Health & Fitness Queries

  • +one rep max calculator
  • +1rm calculator bench press
  • +epley formula 1rm
  • +brzycki 1rm formula
  • +strength percentage chart
  • +max lift calculator

Architecture & Privacy Guarantees

100% Private & Client-Side Sandbox

Your personal health metrics (weight, age, body dimensions) never leave your device. Complete medical confidentiality guaranteed.

Zero Latency & Science-Backed Formulas

Uses validated physiological equations (Mifflin-St Jeor, US Navy, Epley & Brzycki) rendered in sub-millisecond execution.

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