Mecanum Wheels: Calculating Strafe Distance

With a 4" wheel, calculating the forward distance per rotation is relatively easy. You simply find the circumference of the wheel, and that it the distance traveled per rotation.

Somehow I have a hard time seeing how this concept could apply to strafing with mecanums. Does anyone know how to calculate the distance traveled per rotation while strafing with mecanum drive?

In theory, it’s the same as the forward distance from the same number of rotations.

If you want an empirical value, it’s probably best to measure it yourself because it’s likely that no one else has done this particular experiment.