1 Rep Max Calculator and Log

Contains adsIn-app purchases
3.84K reviews
Content rating
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

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.
Updated on
Feb 20, 2022

Data safety

Developers can show information here about how their app collects and uses your data. Learn more about data safety
No information available
3.84K reviews
May 31, 2022
I use this often at the gym to calculate 10RM, 5RM, and 2RM, etc for warm-up sets, as well as using it to help me gauge what is a good weight to aim for during max testing. This app ended up being rather invaluable to me! (powerlifter & bodybuilder female with 3+ yrs experience)
1 person found this review helpful
Did you find this helpful?
May 26, 2022
This app has become an integral part of my workouts and training. Pure simplicity and awesomeness.
2 people found this review helpful
Did you find this helpful?
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.
24 people found this review helpful
Did you find this helpful?

What's new

- Rep Max and Percentages added to edit log screen
- Fixed sorting by Recency
- Startup performance improvements