The O'Conner one Rep Max Weight calculator computes the approximate maximum weight one can lift using the O'Conner formula.
INSTRUCTIONS: Choose units and enter the following:
Max Weight: The calculator returns the approximate max weight in pounds. However, this can be automatically converted to other mass or weight units (e.g. kilograms) via the pull-down menu.
Max Repetition Weight formulas like O'Conner's are intended to provide an estimate on the maximum weight one can lift without having to attempt such a lift. The motivation is to avoid injuries associated with lifting one's max.