I think something similar to stride length would be more useful as base, about 70-80cm. Riugh measuring by strides is something everybody does from time to time

I think something similar to stride length would be more useful as base, about 70-80cm. Riugh measuring by strides is something everybody does from time to time. Meter kind of works for that, but you need to compensate by concsciously making longer strides. I don't thik foot is particularly useful in day to day life - it's awkward to measure walking distance with that, and for measuring smaller objects it's awkwardly placed, an arm length unit might be more useful for measuring smallish objects.