Fitness Goal 4U

Bench Press 1RM
Calculator

Assess your one-rep max for the bench press using weight lifted, repetitions, and training data. Get a clear, practical result to track upper body strength progress and plan your workouts.

Basic Bench Press 1RM Calculator
Transparent FormulasMetric and ImperialCalculated Locally

Bench Press One-Rep Max

Free Calculator
1RM
Lifted weight100 kg
Completed repetitions5 reps
Primary methodEpley
Bench Press 1RM Result ExplainedNo Black Boxes
Updated 12 Aug 2026Free Bench Press 1RM Calculator

Calculate with Bench Press 1RM Calculator

Inputs are checked before calculation

Your result will appear here

Complete the fields and calculate. Your inputs stay on this device.

Purpose and context

What does the Bench Press 1RM Calculator do?

Bench press predictions depend on consistent range of motion, pauses, grip and proximity to failure. The formulas cannot observe any of those details.

Who it supports: Adults performing a consistent bench press protocol.

Transparent calculation

Formula and calculation method

Epley and Brzycki repetition-based 1RM equations

Load and repetition count are passed to the shared 1RM engine, with formula comparison and 60–100% load references.

Primary keywordbench press 1RM calculator
Result typeCalculator-specific result
Published
Last reviewed

Worked calculation example

An 80 kg bench press for 6 reps gives an Epley estimate of 96 kg.

The live calculator retains greater internal precision and rounds only when presenting the result.

How to use the Bench Press 1RM Calculator

  1. Use a controlled set with a consistent range of motion.
  2. Enter load and completed unassisted reps.
  3. Review both equations and training loads.

Understanding your result

The result card identifies the value, unit, method, supporting values and an accuracy notice. Estimated and predicted outputs are labelled so that apparent precision is not mistaken for certainty.

Continue with the 1RM Calculator for a related measurement using its own documented method.

Accuracy, assumptions and limitations

Touch point, pause rules, equipment, spotter assistance and fatigue affect transfer to a true maximum.

Common input and interpretation mistakes

  • Counting spotter-assisted repetitions.
  • Changing pause or range-of-motion standards.
  • Interpreting a prediction as a competition-valid lift.

Primary method source: https://pubmed.ncbi.nlm.nih.gov/15320682/.

Fitness Goal 4U provides general informational calculations and does not replace medical assessment, diagnosis, treatment or individualized advice from an appropriately qualified professional.

Frequently asked questions about Bench Press 1RM Calculator

The equation is unchanged, but the input performance can differ, so keep the protocol consistent.

Use the range of motion required by your training or competition standard and repeat it consistently.

Higher-repetition prediction error can increase as fatigue and individual endurance contribute more.

This tool is intended for a single total lifted load; dumbbell performance should be tracked under a clearly consistent convention.

Related calculators

These tools are connected by calculation purpose, inputs or the next question users commonly ask.

1RM CalculatorEstimate one-repetition maximum from a technically sound submaximal set and compare Epley and Brzycki predictions. Squat 1RM CalculatorEstimate squat one-repetition maximum from a controlled set and view squat-specific training percentages. Deadlift 1RM CalculatorEstimate deadlift one-repetition maximum from a technically valid set and view percentage-based reference loads. Training Max CalculatorCalculate a programming reference from an actual or estimated 1RM and a selected percentage.