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1RM Max Calculator

1RM Max Calculator

7 proven formulas for lifting

22 ratings
27 reviews
๐Ÿ”ง Utilities
๐Ÿ’ช Health & Fitness
Free
In-App Purchases

Details

  • Released
  • Updated
  • May 5, 2016
  • May 18, 2026

Features

Developer

Kazumasa Shimomura
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1RM Max Calculator screenshot #1 for iPhone
1RM Max Calculator screenshot #2 for iPhone
1RM Max Calculator screenshot #3 for iPhone
1RM Max Calculator screenshot #4 for iPhone
๐Ÿงพ$0.99
In-App Purchaseโ†˜๏ธŽ
โญ27
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About

Instantly calculate your one-rep max (1RM) for bench press, squat, and deadlift using 7 scientific formulas. Track your progress with intuitive charts and calendar records. Ideal for athletes and lifters aiming for more scientific and effective training.

โœ“7 scientific 1RM calculation formulas
โœ“Supports bench press, squat, and deadlift
โœ“Progress tracking and data visualization
โœ“Calendar for daily record management
โœ“One-tap data saving
โœ“Offline functionality
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What's New in 1RM Max Calculator

3.5.0

May 18, 2026

- Added a setting to choose the calculation method - Added support for Conservative and Standard calculation modes - Results now update based on the selected calculation method

More
3

In-App Purchases

$0.99

Calculator for deadlift

You can calculate max weight of deadlift.

User reviews

Most RecentHighest RatedLowest Rated

Great tool

Simple to use and is a great training tool.
KatojapanKatojapan

Response from developer

Thank you for using 1RM Max Calculator and for your kind review. We are glad the app is useful for you, and we will keep improving it.

Best App Ever

Iโ€™ve personally used 7 different maximum lift calculator apps. This is the only app that I will trust when calculating an anticipated maximum bench press. It has yet to fail me. For example, with no spotter (with safety catches) I easily benched 235 x 8. Within the next few days I benched 282 with relative ease.
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Neverold2023Neverold2023

Response from developer

Thank you for using 1RM Max Calculator and for your kind review. We are glad the app is useful for your training, and we will keep improving it.

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ไพฟๅˆฉ

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1repใฎmax้‡้‡ใ‹ใ‚‰10repใ‚„8repใฎ้‡้‡่จˆ็ฎ—ใ‚‚ๆฌฒใ—ใ„ใงใ™ใ€‚ ใพใŸใ€้ŽๅŽปใฎ่จ˜้Œฒใฎใคใ„ใ‹ใใฎใ†ใŒๆฌฒใ—ใ„ใงใ™
Hirot12345Hirot12345
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FAQ

What does the 1RM Max Calculator app do?

This app helps you accurately calculate your one-rep max (1RM) for key lifts like bench press, squat, and deadlift. It utilizes 7 different scientific formulas to provide reliable estimates of your maximum weight capacity.

What are the key features of the 1RM Max Calculator?

Key features include support for 3 major lifts, 7 scientific calculation formulas, comprehensive progress tracking with data visualization, a calendar function for record management, one-tap data saving, and full offline functionality.

Is the 1RM Max Calculator app free to use?

The application is free to download and use, offering core functionality. It also includes in-app purchases, suggesting that some advanced features or content may be available for purchase.

Who is the 1RM Max Calculator app designed for?

This app is perfect for athletes looking to track training effectiveness, lifters who need precise 1RM calculations, individuals planning structured training programs, and fitness enthusiasts monitoring their progress.

Can I use the 1RM Max Calculator offline?

Yes, the app offers full offline functionality. This means you can calculate your 1RM, log your workouts, and track your progress even without an internet connection.