1RM Calculator & Strength Rank

Calculate your 1 rep max quickly and see how your strength compares to standard levels.
1 Rep Max Calculator is a simple calculator for lifters who want fast results without using a full workout app.
Enter the weight and reps from a set to estimate your one rep max (1RM). The app uses standard formulas to give a reliable estimate without needing to test a true maximum.
The result includes a strength classification based on common standards:
Beginner, Novice, Intermediate, Advanced, and Elite.
You also receive a rank based on your result, which gives a clearer sense of progression over time.
The app is designed to be quick to use:
no account, no setup beyond basic profile information, and no unnecessary features.
You can save your lifts and review previous results. This makes it easier to track changes in estimated strength across different exercises.
Supported exercises include common lifts such as bench press, squat, deadlift, and overhead press, as well as custom entries.
Advanced stats are available as an optional feature and provide additional context such as comparison to standard levels and estimated progression.

Why use a 1 rep max calculator:
Estimating your one rep max allows you to:
- Avoid testing maximal lifts frequently
- Track strength changes over time

The calculation is based on widely used methods such as the Epley formula.

This app is intended for:
- lifters who want a simple strength calculator
- users who prefer quick tools over full gym trackers
- anyone looking to estimate their 1RM during or after a workout