Know what you can lift for 5 reps but not for 8? Enter any set and see your estimated maximum for every rep count from 1 to 15.
How this works
Your set is converted to an estimated one-rep max with the Epley formula (weight × (1 + reps ÷ 30)), then reversed to predict your maximum for each rep count: 1RM ÷ (1 + reps ÷ 30).
Use it to choose working weights: for example, a weight you can lift for 10 reps is usually about 75% of your max.
Stop exercising and rest if you feel pain, dizziness or unusual shortness of breath. Check with your doctor before starting a new exercise program.
