• 1 Rep Max Calculator - 1RM 1
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1 Rep Max Calculator - 1RM

Calculate your bench press, deadlift, squat, or any other lift one rep max. Simply tell one rep max calculator how much weight you lifted, how many times you lifted it, and your one rep max will be calculated. One Rep Max Calculator will have accurate one repetition maximum calculations for almost any weightlifting exercise no matter the type of lift you are doing.
Do you have a unique lift you want to track? Create custom lifts and track your one rep max for any exercise. Get a visual of your hard earned progress with graphs.

Calculating your one rep max before attempting it can help keep you safe. Attempting a heavy back squat without knowing your limit can easily lead to injury. This app provides you with a strength estimate before you attempt your heavy lifts.

We've also included a weight percentage quick reference guide. This app is great for powerlifters, olympic weightlifters, and CrossFitters.

All one rep max calculations performed using the Epley Formula. The accuracy of the one rep max calculations can vary depending on the weight training experience and muscular composition of the athlete using the calculator. This calculator is designed towards seasoned strength trainers, and those with lesser experience may find their actual one rep maximum is much lower because your nervous system cannot handle the stress of a high weight.

Lift responsibly. Heavy weightlifting should be performed with a spotter for safety.

Category : Health & Fitness

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Reviews (16)

Kyl. M. Feb 19, 2019     

ive used this app for a while. while trying ro clean up space on my phone i noticed this app was taking over 225mb of space, after I cleared the cache and data. i uninstalled and reinstalled, it states on the play store app page its 36mb. After installed it jumped to 75mb without even opening the app. Its a good tool but so many out there that are less resource hungry. bummer because I liked this app.

Jus. H. Apr 15, 2022     

Doesn't work nor have they made any attempts to fix it in the last 6 months don't waste time get a different app

Joh. H. May 28, 2019     

A must have for anyone serious about weightlifting! It's easy on the battery and simple to use.

Cal. C. Feb 25, 2020     

Decent.. wish free u could log accessory workouts and make like a chart but its ok for free

Hen. A. Feb 20, 2019     

I wish you could have some more features , but really easy to use

Ste. H. Jan 24, 2022     

Doesn't work since newest Samsung update

Dav. C. Feb 5, 2022     

Bought app can't even open it now. Don't recommend this app!

jdo. Mar 17, 2020     

Does what it says. Seems accurate based on real life testing for me.

Rag. R. Feb 7, 2018     

Good, but needs more workouts to calculate

A. G. u. Oct 6, 2016     

Finally a one rep max app with 11+ rep options

Mic. A. Jun 17, 2016     

After the last update hundreds of logged lifts were deleted and now if I want the same functionality as before I have to "upgrade"? Really? I have to pay 3.99 to log more than 5 lifts? LMAO! PASS! There are plenty of free apps that do more.

Jas. K. Oct 21, 2015     

It's a good app and I like a lot of the features, only problem is that when I try switch what lift to log under it never changes just stays the first one on the list.

Ger. L. Nov 9, 2015     

Also having the problem as of Monday where my lift will not change

Jer. V. Feb 4, 2016     

The weight only goes up to 300 lbs? There's not a single lift this is good.

Pra. G. Jan 4, 2016     

Excellent! Just what I need

GOD. O. I. Nov 30, 2015     

Love it