Pedometer question

MaryCS62

So, I just got myself a pedometer a few weeks ago, & tried to calculate my stride by the instructions, & also verified that the steps taken matched the device. (used the mall, counted 200 strides, adjusted, counted 150 strides, matched). My step count is low, at least according to the device. My confusion is this: the last 2 times I've used the treadmill at my work fitness center, even though according to the treadmill I walked a mile, & 3/4 of a mile in my last 2 go-rounds, the pedometer only said I went 0.33 & 0.3 mile!! Any ideas how to fix this?

SueInAz

What type of pedometer is it? My Fitbit is pretty accurate when I use the treadmill at work.