One-Rep Max Calculator (Brzycki Formula)
Estimate your one-rep max using the Brzycki formula. Enter the weight lifted and reps performed to get your projected 1RM and a percentage chart.
Estimated 1RM (Brzycki)
253 lbs
Weight Used
225 lbs
Reps Performed
5
Percentage Chart
95%: 240 lbs
90%: 228 lbs
85%: 215 lbs
80%: 203 lbs
75%: 190 lbs
70%: 177 lbs
65%: 165 lbs
60%: 152 lbs