Bench Press Max Calculator
Estimate your 1RM bench from a rep set.
Enter your values
ⓘ Live results
Results
- Estimated 1RM
- 94.5 kg
- Epley estimate
- 96 kg
- Brzycki estimate
- 92.9 kg
- Training weight (80%)
- 75.6 kg
| % of 1RM | Weight | Approx reps |
|---|---|---|
| 95% | 89.7 | 2 |
| 90% | 85 | 4 |
| 85% | 80.3 | 6 |
| 80% | 75.6 | 8 |
| 70% | 66.1 | 12 |
Quick answer
One-rep max is estimated from a submaximal set; Epley and Brzycki agree closely under about 10 reps.
Epley: 1RM = w x (1 + reps/30)
How to use the Bench Press Max Calculator
- 1Perform a clean set to near failure with good form.
- 2Enter the weight and the number of reps you completed.
- 3Use the table to plan working sets.
Worked example
Using the values the calculator loads with:
Inputs
- Weight lifted80 kg
- Reps completed6
Results
- Estimated 1RM94.5 kg
- Epley estimate96 kg
- Brzycki estimate92.9 kg
- Training weight (80%)75.6 kg
Frequently asked questions
How accurate above 10 reps?
Accuracy drops sharply; use sets of 3-8 for the best estimate.
Should I test a true 1RM?
Only with a spotter and after a proper build-up; estimates are safer week to week.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.