Calculate your bench press maximum quickly! Get a list of percentage-based-weight to use immediately in your workout! Light, lean, & effective: BenchMax is a simple utility for the weightlifting enthusiast to whom the details matter. BenchMax is an application that allows users to calculate an estimated weightlifting one-rep maximum quickly and effectively. It also provides users with a table of commonly-used percentages and their associated values when compared to the calculated maximum, that are commonly used in designing workout programs.