# One Rep Max Calculator

> Estimate one-rep max from lifted weight and reps using Epley, Brzycki, Lombardi, or the average of all three. Returns a training-load percentage table.

**URL:** https://www.calculatoranswers.com/one-rep-max-calculator
**Category:** Health

## Quick Answer

Estimate the maximum weight you can lift for a single repetition of any exercise. Enter the weight and reps from a completed set to view your 1RM estimation.

## Definition

A one-rep max calculator is a strength training assessment utility that estimates the maximum weight an individual can lift for a single repetition. It applies established formulas, such as Epley, Brzycki, or Lombardi equations, using submaximal weight and repetition inputs. The calculator projects the theoretical limit and compiles a training load table showing percentages of the estimated maximum. Athletes, strength coaches, and weightlifters employ it to program resistance training intensities without attempting risky maximal lifts.

## How to Use

1. **Input weight lifted** — Type the weight used during your training set into the weight field.
2. **Select repetitions completed** — Choose the number of consecutive reps you performed from the dropdown list.
3. **View estimated maximums** — Read the calculated one-rep max values and review the training percentage chart.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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