Bench Press 1RM Calculator
A tool estimating your heaviest possible single bench press lift. It uses weights you can lift for multiple reps to calculate your one-rep max (1RM).
Calculate Your 1RM
Kilograms (kg)
Pounds (lb)
Calculating your maximum strength...
Your Estimated 1 Rep Max:
0 kg
Formula Used:
Brzycki Formula (most accurate for bench press):
1RM = weight / (1.0278 - (0.0278 × reps))
This formula is considered the most accurate for lower rep ranges (1-10 reps).
Note
These calculations are estimates. Individual results may vary based on factors like muscle fiber composition, training history, technique, and body mechanics. Always consult with a fitness professional before attempting maximal lifts.