About One Rep Max: 1RM Calculator
Stronger Training, Smarter Progress One Rep Max helps you safely and accurately determine your maximum lift potential for bench press, deadlift, squat, and any other strength exercise - without risking injury. Key...
Stronger Training, Smarter Progress
One Rep Max helps you safely and accurately determine your maximum lift potential for bench press, deadlift, squat, and any other strength exercise - without risking injury.
Key Features:
• Precise Calculations - 7 scientific formulas for accurate strength predictions: Epley, Brzycki, Lombardi, Mayhew, McGlothin, O'Conner, Wathan
• RPE Integration - Factor in Rate of Perceived Exertion to fine-tune your max estimates based on how difficult sets feel
• Custom Exercise Tracking - Create and monitor any lift that matters to you
• Visual Progress - Beautiful graphs show your strength journey over time
• Percentage Charts - Quick reference guide for training percentages
• Goal Setting - Set targets and track your path to reaching them
Perfect for:
• Powerlifters optimizing their training cycles
• CrossFit athletes tracking multiple movement patterns
• Olympic weightlifters monitoring progress
• Strength enthusiasts at any level
Advanced Features:
• Choose between multiple calculation formulas for different lift types
• Track unlimited exercises with custom notes
• Rate of Perceived Exertion (RPE) - Fine-tune your 1RM estimates based on how difficult sets feel
• Analyze detailed statistics including volume and frequency
• Set and monitor progress toward specific strength goals
The Science Behind The Numbers:
Our app employs multiple validated formulas to estimate your one-rep maximum based on your performance with submaximal weights. This provides you with safe strength targets before attempting potentially risky maximal lifts.
Safety Note:
Heavy weightlifting should always be performed with proper technique and appropriate spotting. This app provides estimates based on scientific formulas, but individual performance may vary based on experience level and training history.
Previous Versions
Here you can find the changelog of One Rep Max: 1RM Calculator since it was posted on our website on 2018-02-22 19:15:25.
The latest version is 4.0.24 and it was updated on 2026-10-12 19:06:03. See below the changes in each version.
One Rep Max: 1RM Calculator version 4.0.24
Updated At: 2026-09-28
Changes: Stronger foundations for your strongest lifts. Upgraded to the latest Android frameworks with refreshed sign-in. Your lifts and maxes carry right over. Go chase that next PR.
One Rep Max: 1RM Calculator version 4.0.23
Updated At: 2026-08-18
Changes: Fixed: the app no longer breaks when your phone's font size is turned up. If you use larger text, numbers and labels could overlap or run off the edge of the screen, and buttons could end up out of reach. Everything now stays put and readable, whatever your display settings. Plus the usual polish, performance improvements, and bug fixes.
One Rep Max: 1RM Calculator version 4.0.22
Updated At: 2026-07-30
Changes: A smoother way to log. We've cleaned up the flow throughout the app, so adding a lift, updating a max, and checking your history all take fewer taps and less hunting around. Clearer screens, the numbers that matter easier to read at a glance, and less scrolling to get where you're going. Plus the usual polish, performance improvements, and bug fixes.
One Rep Max: 1RM Calculator version 4.0.20
Updated At: 2026-06-24
Changes: Back up your lifts. You can now sign in to securely back up your workout data and keep it synced across all your devices. Plus bug fixes and performance improvements.
One Rep Max: 1RM Calculator version 4.0.16
Updated At: 2026-04-28
Changes: Faster PRs and cleaner lifts. The 1RM calculator now runs smoother on Android 16, with improved charts for tracking bench press, squat, and deadlift progress. Brzycki and RPE-based max lift estimates are more accurate, and the gym log loads faster whether you're powerlifting, doing CrossFit, or barbell training. Keep chasing those max lifts!
One Rep Max: 1RM Calculator version 4.0.12
Updated At: 2026-01-03
Changes: We've made it easier than ever to get started with One Rep Max.
• Improved onboarding flow to get you lifting faster
• New exercises automatically appear on your progress charts
• Cleaner, ad-free interface throughout the app
One Rep Max: 1RM Calculator version 4.0.10
Updated At: 2025-11-21
Changes: We're always working to make your lifting sessions easier and more efficient. Here's what's new:
• New quick-fill button on lift history screen lets you instantly populate the calculator with reps, weight, and RPE from your previous lifts
• Improved plate calculator now suggests weights closer to the target weight
• Fixed display issue where weights showed too many decimal places
Happy lifting!
One Rep Max: 1RM Calculator version 4.0.8
Updated At: 2025-05-05
Changes: New! Visual Plate Calculator
• See exactly which plates to load on your barbell
• Visual representation of plates on both sides
• Works with pounds and kilograms
• Pro users can customize their plate inventory
• Smart calculations to match your available weights
No more mental math during your workouts - load your bar with confidence!
One Rep Max: 1RM Calculator version 3.1.9
Updated At: 2019-04-08
Changes: - Bug fixes and performance improvements
Let us know if we can do anything to make the app better for you! Please be sure to review the app so others can find it when searching.
Disclaimer
Official Google Play Link
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