1 Rep Max Calculator and Log

Contains adsIn-app purchases
4.83K reviews
Content rating
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About this app

1 Rep Max Calculator is a must have app for every weight lifter. It calculates the maximum weight that you can lift for 1 repetition given information that you already know. Just enter the weight and reps that you were previously able to achieve and let the calculator do the rest! It can also be used to calculate the percentages of your one rep max and your Wilks Score.

This app is designed for bodybuilding and powerlifting, so it's important to track your progress. Log your best 1 rep max records using the built in log feature. Add exercises and log new records to watch your strength grow over time.

Need help determining which weights to put on the bar? Simply tap on any weight in the app to view the plate loader calculator. It will let you pick which weights you have available and the bar type you're using.

Trying to keep track of changes in your body weight? 1 Rep Max Calculator allows you to track your body weight and view the change over time. You can even set a goal body weight.

There are many 1 Rep Max formulas to choose from: Epley, Brzycki, Lombardi, Mayhew, McGlothin, OConner, Wathan. You can choose just a single formula or get an average of the ones you select.

This exact app isn't available for iOS or Web, but there is a light version here: https://www.onerepmaxcalc.com/
Updated on
Jul 29, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, Financial info and 3 others
This app may collect these data types
Location, Financial info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.71K reviews
A Google user
June 6, 2019
The app is consistent and accurate as long as you stay within the 12 rep range. Great for building a workout based on your max. You also dont have to max as often because the app can give you an accurate estimation based on your rep ranges with a given weight. It's a useful tool.
30 people found this review helpful
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April 25, 2023
Would have been 5 stars, except for the fact that I paid for the pro version and it doesn't register - I am still bombarded with ads and can only input a limited number of exercises. Needs fixing ASAP and then it would be 5 stars.
5 people found this review helpful
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Code Gardener LLC
August 8, 2023
Apologies for the inconvenience, this problem has been resolved in the latest update. Please upgrade and if you experience any further issues, kindly reach out to codegardenerllc@gmail.com. Thank you!
A Google user
May 1, 2019
Skeptical, but after trying it for a while I found it to be pretty spot on for me and having percentages handy helps, too. A full log would take it to the next level.
5 people found this review helpful
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What's new

- Fix for some devices not restoring purchases