1 Rep Max Calculator
Othman Shawgan Health & Fitness
Calculate your 1RM and find out how much you can lift.
- Downloads
- 8.9K+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Mar 31
- 2026 · v4.2.1
Screenshots
About 1 Rep Max Calculator
1 Rep Max Calculator is an app that lets you calculate your 1RM, and find out how much you can lift.
The app uses the best known formula to find out your 1RM, and gives you the approximant 1RM.
All you have to do is enter the weight and reps of a certain set and the app will calculate the approximant 1RM
The app uses the best known formula to find out your 1RM, and gives you the approximant 1RM.
All you have to do is enter the weight and reps of a certain set and the app will calculate the approximant 1RM
What’s new
Version 4.2.1 · Updated March 31, 2026
Complete UI Overhaul We tore down the old interface and rebuilt it from the ground up so it looks and feels like a premium training tool. • Dynamic Barbell Visualizer: Instantly see the exact plates you need to load for your next PR right on the screen. • Custom Plate Inventory: The app now permanently saves your available equipment. Don't own 25kg reds? Tell the app once, and it will never suggest them again.
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