How accurate is the 1RM estimate from this calculator?

The estimate is based on established strength formulas (Epley, Brzycki, Lombardi) and is reasonably accurate for trained lifters using weights they can handle for 1–10 reps, but it is still an estimate and may differ from your actual one-rep max.

Can I use this calculator for exercises other than bench press?

Yes, the calculator estimates 1RM for any lifting movement; the page notes that one rep max typically differs by exercise, so it is important to measure 1RM for the specific lift you are planning.

What does the save icon do after I calculate my 1RM?

Clicking the save icon on the result bar stores your calculated 1RM for future reference, allowing you to look back at previous 1RMs for various exercises to gauge your progress over time.

Which 1RM formula should I choose: Epley, Brzycki, or Lombardi?

The formulas differ in how they weight the number of reps; Brzycki is often considered the most accurate for lower rep ranges, Epley is standard for moderate reps, and Lombardi favors higher rep inputs. You can try each to see which estimate feels most aligned with your experience.

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Bench Press Calculator - Find Your 1RM

Provided byCalculator.netcalculator.net

Its One Rep Max Calculator estimates your 1RM from lifted weight and reps using common strength formulas. The tool al...

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About this tool

What Bench Press Calculator - Find Your 1RM does

This free online tool estimates your one-rep max (1RM) for the bench press and other lifts by entering the weight you lifted and the number of repetitions you completed. It outputs a calculated 1RM value and, crucially, provides percentage-based training weights so you can plan working sets for bench, squat, deadlift, and related sessions. The calculator uses established strength formulas—Epley, Brzycki, and Lombardi—and lets you choose between kilograms and pounds as your desired unit. A distinctive feature of this Calculator.net version is the persistent save function: after calculating your 1RM, a save icon appears on the result bar, allowing you to store and revisit your numbers for future progress tracking without needing an account. The page also includes clear explanations of why 1RM matters and detailed method notes, making the math transparent for practical strength planning.

Step by step

How to use the Calculator.net Bench Press Calculator - Find Your 1RM

1
Enter the weight you lifted for a set of bench press (or other exercise) in the "Weight Lifted" field, selecting kilograms or pounds.
2
Input the number of repetitions you completed with that weight (between 1 and 10) in the "Repeated times" field.
3
Select your preferred 1RM estimation formula from the dropdown: Epley, Brzycki, or Lombardi.
4
Click the "Calculate" button to see your estimated one-rep max displayed in the result bar.
5
Use the save icon on the right side of the result bar to store your 1RM for future reference and progress tracking.

Is it right for you

Best for

Beginner and intermediate lifters who want a quick, free estimate of their one-rep max and percentage-based training weights to structure their strength programs without needing a paid app or subscription.

Limitations

Results are estimates based on common formulas and may not match your true max.
The rep range is limited to 1–10 repetitions; outside this range the calculator may be less reliable.
No unit switching during a single calculation; you must select kilogram or pound at the start.

Questions

Bench Press Calculator - Find Your 1RM FAQ

How accurate is the 1RM estimate from this calculator?: The estimate is based on established strength formulas (Epley, Brzycki, Lombardi) and is reasonably accurate for trained lifters using weights they can handle for 1–10 reps, but it is still an estimate and may differ from your actual one-rep max.
Can I use this calculator for exercises other than bench press?: Yes, the calculator estimates 1RM for any lifting movement; the page notes that one rep max typically differs by exercise, so it is important to measure 1RM for the specific lift you are planning.
What does the save icon do after I calculate my 1RM?: Clicking the save icon on the result bar stores your calculated 1RM for future reference, allowing you to look back at previous 1RMs for various exercises to gauge your progress over time.
Which 1RM formula should I choose: Epley, Brzycki, or Lombardi?: The formulas differ in how they weight the number of reps; Brzycki is often considered the most accurate for lower rep ranges, Epley is standard for moderate reps, and Lombardi favors higher rep inputs. You can try each to see which estimate feels most aligned with your experience.

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