1 RM Calculator is a free App without any type of advertising, which allows you to calculate your maximum repetition of any exercise in a simple and fast way.
An Ideal tool for lovers of strength training.
Calculate your maximum repetition in a simple and fast way.
Updated on
Jul 25, 2026
Sports
Data safety
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
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What’s new
🚀 What's New
🏋️ Improved the 1RM calculation for more accurate results. 📈 Added estimated reps for each training load percentage. 🎨 Refined the interface for a cleaner and more intuitive experience. 🐞 Fixed bugs and improved overall stability.