Best of Hashi Mashi Weightlifting & Fitness Blog - Max Deadlift Calculator - How To Find Your 1RM In 5 Easy Steps - Every fitness enthusiast who wants to improve their deadlift needs to know his or her 1RM. This article explains why and how to calculate your 1RM either by using the Epley formula in 5 easy steps or by using HashiMashi.com's One Rep Max Calculator. max deadlift calculator | 1 rep max calculator deadlift | deadlift max calculator | one rep max deadlift