One Rep Max Calculator

Calculate your One Rep Max (1RM) for Bench Press, Squat, and Deadlift using Epley & Brzycki formulas.

Users0

Rating--

Reviews0

Manifest versionV3

7-day growth0

7-day growth rate--

Preview

One Rep Max Calculator Media preview

2 assets

Trend

30-day user trend

Review user movement over the last 30 days.

User Growth Over Time

Rating trend

30-day rating change

Track rating movement over time to see whether quality signals remain stable.

Not enough rating snapshots yet. More data will appear as new snapshots are collected.

Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthFlat

0--

7-day growthFlat

0--

30-day growthFlat

0--

Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version1.1

ManifestV3

Size724KiB

Languages1English (United States)

Published--

Store updated--

Last crawled--

Overview

Product summary

Review the store description, core capabilities, and common use cases.

Calculate your One Rep Max (1RM) instantly — right from your browser.

Whether you're preparing for a powerlifting competition or planning your next training cycle, knowing your true max is essential. This extension helps you estimate your one rep max for Bench Press, Squat, and Deadlift using proven scientific formulas.

How It Works:

Simply enter the weight you lifted and the number of reps you completed. The calculator uses two time-tested methods (Epley and Brzycki) to give you an accurate estimation.

What You Get:

🏋️ Dedicated modes for Bench Press, Squat, and Deadlift

Reviews