Use the calculators below to help figure out what your estimated one-rep max would be based on a set with more than one rep. You can calculate the estimated 1RM based on a given weight and rep count if you already have those numbers. If you're doing a weight for AMRAP, you can put that weight in to find out what your E1RM will be for different reps you might hit. If you have a target E1RM that you want to get, you can use the third option to figure out what combination of reps and weight will get that estimated max.