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MaxLift One Rep Max Calculator

One Rep Max Calculator

Calculate your maximum lifting capacity for any exercise. Perfect for strength training and program design.

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1RM Calculator

Kilograms (kg)
Pounds (lbs)

Training Zones

Strength (1-3 reps) 90-100% 1RM
Hypertrophy (6-12 reps) 67-85% 1RM
Endurance (12+ reps) <67% 1RM

Your Estimated One Rep Max

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kg

3 Rep Max

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5 Rep Max

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8 Rep Max

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10 Rep Max

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Strength Level

Beginner Intermediate Advanced Elite

Your strength level will appear here after calculation.

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Strength Training Guide

What is 1RM?

One Rep Max (1RM) is the maximum amount of weight you can lift for a single repetition. It's a key metric for strength training program design.

Training Benefits

Knowing your 1RM helps you determine training loads for different goals: strength, hypertrophy, power, or muscular endurance.

Safety First

Never attempt a true 1RM without proper preparation, spotters, and safety equipment. Use calculated estimates for programming.

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