Estimate your maximum strength (one rep max) using multiple proven formulas for higher accuracy.
Estimated One Rep Max:
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About One Rep Max

One Rep Max (1RM) represents the maximum weight you can lift for a single repetition with proper form. It is widely used in strength training programs.

How This Calculator Works

Instead of relying on one equation, this tool calculates your 1RM using several respected formulas and provides an average value for better accuracy.

Training Advice

Avoid testing true 1RM frequently. Estimated values are safer and more suitable for long-term progress and injury prevention.

FAQs

Is this exact? No, but it provides a strong estimate.
Does this work for beginners? Yes, estimated 1RM is ideal for beginners.
What rep range is best? 2–10 reps give the most accurate estimates.