1RM Calculator (One-Rep Max)

Calculate your one-repetition maximum to determine your maximum strength and generate personalized training weights for different rep ranges.

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1RM Calculator

Calculate your one-rep maximum using either weight lifted for multiple reps or estimate from body weight and strength level.

Your One-Rep Max
0.0
1RM
100%
Max Load
Training Weights
Strength (1-3 reps) -
Hypertrophy (6-8 reps) -
Endurance (12-15 reps) -

Training Percentages

See the exact weights to use for different rep ranges based on your 1RM percentage.

Training Percentages
% of 1RM
Weight
Rep Range
Training Goal
95%
0
1-2
Peak Strength
90%
0
2-3
Strength
85%
0
3-5
Strength
80%
0
5-7
Power
75%
0
8-10
Hypertrophy
70%
0
10-12
Hypertrophy
65%
0
12-15
Endurance
60%
0
15-20
Endurance

Strength Standards

Compare your 1RM with strength standards for your body weight and experience level.

Strength Standards Comparison
Untrained 0.0
Just starting strength training
Novice 0.0
~6 months of consistent training
Intermediate 0.0
1-2 years of consistent training
Advanced 0.0
Multiple years of dedicated training
Elite 0.0
National/International level competitors
Your Level:
-