One Rep Max Calculator - Maximize Your Lifts

Use our One Rep Max Calculator to find your maximum lift for bench press, squats, and deadlifts. Enter your recent lifting data to get your one-rep max (1RM) for setting training goals and tracking progress.


times
(1-10)
Settings
Formula to use
How to Use This Calculator
  1. Enter the weight you can lift for multiple repetitions
  2. Select your preferred weight unit (kilograms or pounds)
  3. Input the number of repetitions (between 1-10)
  4. Choose your preferred calculation formula (optional)
  5. Click Calculate to see your results
Key Features
  • Multiple formula options for accurate estimation
  • Support for both kilograms and pounds
  • Visual representation with chart
  • Detailed percentage and repetition tables
  • Instant calculations with real-time validation
What is One Rep Max (1RM)?

One Rep Max (1RM) represents the maximum amount of weight you can lift for one complete repetition of a specific exercise while maintaining proper form. It represents the peak force that your muscles can generate in a single, all-out effort.

Common Use Cases
Strength Training Program Design: Calculate training percentages for different workout phases
Progress Tracking: Monitor strength gains over time
Exercise Programming: Design effective workout routines based on percentages
Competition Preparation: Set realistic goals and track progress
Safety Notice

Always consult with a qualified fitness professional before attempting maximal lifts. Proper form and safety should always be your top priority.