Transparent strength tools

Bench press numbers you can understand.

Calculate estimated 1RM, percentage loads, rep references and plate combinations with tools that show the method behind the number.

Browser-based calculationsFormula shownLast reviewed: October 7, 2026
Athlete performing a barbell bench press in a gym
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Bench Press Calculator

Enter a completed set and get a transparent 1RM estimate plus reference loads. The result is an estimate, not a verified maximum.

Use a set you have already completed with consistent technique.
For this tool, use 1–12 repetitions.
Enter your numbers to see your result.
Last reviewed: October 7, 2026Formula range: 1–12 repsInputs stay in your browser
Tool library

Bench press calculators

Focused tools for the main bench press calculations and common exercise variations.

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Bench Press Calculator

Estimate bench press 1RM, percentages, rep targets and plate loading from a completed set.

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Bench Press 1RM Calculator

Estimate a bench press one-rep max from a submaximal set using established prediction equations.

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Bench Press Percentage Calculator

Convert a bench press 1RM into percentage-based training loads from 50% through 100%.

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Bench Press Plate Calculator

Work out plates per side for a target barbell bench press load using common plate increments.

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Bench Press Rep Calculator

Estimate 1RM and reference loads from a completed bench press repetition set.

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Incline Bench Press Calculator

Estimate incline bench press 1RM and reference loads from a completed set.

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Decline Bench Press Calculator

Estimate decline bench press 1RM and reference loads from a completed set.

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Close-Grip Bench Press Calculator

Estimate close-grip bench press 1RM and reference loads from a completed set.

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Wide-Grip Bench Press Calculator

Estimate wide-grip bench press 1RM and reference loads from a completed set.

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Paused Bench Press Calculator

Estimate paused bench press 1RM from a completed set using the same transparent calculation framework.

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Smith Machine Bench Press Calculator

Estimate Smith machine bench press 1RM from your completed repetitions and load.

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Dumbbell Bench Press Calculator

Estimate dumbbell bench press 1RM from the combined load of both dumbbells.

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Incline Dumbbell Bench Press Calculator

Estimate incline dumbbell bench press 1RM from the combined load of both dumbbells.

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Decline Dumbbell Bench Press Calculator

Estimate decline dumbbell bench press 1RM from the combined load of both dumbbells.

Why this site exists

A calculator should not be a black box.

Bench Press Calculators was built around a simple publishing principle: users should be able to see what a result means, which equation produced it, what assumptions were made and where the method has limits.

We publish the calculation logic, worked examples, review dates and source notes alongside the tools. When an equation is only an estimate, we say so rather than presenting the output as a measured fact.

Our tools are educational strength-calculation utilities. They do not diagnose, prescribe training, or replace qualified coaching or medical care.

51RM equations
11percentage references
9rep references
14focused calculators
Trust

How we keep the tools accountable

  • Named formulas and source notes
  • Visible assumptions and limitations
  • Calculator-specific review dates
  • Correction and bug-report route
  • Clear distinction between estimates and measurements
Read Quality Standards
Research

Start with the evidence

Our 1RM methodology draws on published strength research and established prediction equations. Research is used to explain the method, not to imply that any one equation is universally accurate for every lifter.

View Research & References
FAQ

Bench press calculator questions

What is a bench press 1RM?

A one-repetition maximum (1RM) is the maximum load a person can lift for one repetition under a defined testing protocol. A calculator estimates it from a submaximal set.

Which formula does the calculator use?

The 1RM tools calculate Epley, Brzycki, Lander, Lombardi and O’Conner estimates and show the individual values before displaying their arithmetic mean.

Are the results exact?

No. Repetition-based equations are predictive models. Their error can vary with exercise, rep range, training status, technique and how close the set was to failure.

Do you store my calculator inputs?

The calculator logic runs in the browser. The site does not need an account or a server-side calculation database for these tools.