The Mayhew Max Weight calculator computes the approximate maximum weight one can lift using the Mayhew formula.
INSTRUCTIONS: Choose units and enter the following:
Max Weight (1RM): 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.
The Mayhew Max Weight formula is:
`1RM = (100*w)/(52.2+41.9*e^(-0.055*r))`
Max Repetition Weight formulas like Mayhew 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.