One Rep Max Calculator
Estimate your maximum lift capacity
Calculate Your One Rep Max
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How to Use the One Rep Max Calculator
The One Rep Max Calculator estimates your maximum lift capacity based on the weight you lifted and the number of repetitions performed. This tool helps plan strength training programs.
Step-by-Step Guide
- Enter the weight lifted in kilograms (e.g., 80 kg).
- Enter the number of repetitions performed (e.g., 5).
- Click “Calculate Now” to compute your one-rep max.
- Review your one-rep max result and tips for strength training.
- Use “Calculate Again” to adjust inputs or try different lifts.
The calculator uses the Epley formula: 1RM = Weight × (1 + Reps/30). Results provide an estimate of the maximum weight you can lift once, useful for setting training goals.
Use this tool with our Muscle Gain Calculator to optimize strength gains or consult a trainer for safe lifting techniques.