Counting way too many flights of stairs while on the treadmill

[SueRutford]

This isn't the first time this has happened, but it's so egregiously wrong that I decided to post about it.  Today, while walking on a flat treadmill for 25 minutes, I got 24 flights of stairs.  Actual flights climbed (3) did count correctly, but this was a ridiculous amount of over-counting.

I place my Fitbit around my ankle, in my sock, when I am on the treadmill.  The step count is correct.  The stair flights are correct sometimes (1 flight up to get to the treadmil), but quite often I have 5-20 extra flights counted.  This is not a new thing, and I have done several resets/restarts, so that doesn't seem to fix it.

[AlvaroFitbit]

@SueRutford I hope you're doing well!

Let me help you with your Charge 2 floor count and thank you for troubleshooting this issue. Your device uses it's altimeter to detect variance in altitude. It will count 1 floor for every 10 ft it detects you climbed. There are situations that may affect the floor count like stormy weather (that has an actual impact on atmospheric pressure), gusts of wind, an AC unit in a closed room or opening a door. I suggest you start by cleaning the back of the device with cotton and rubbing alcohol then use compressed air at a distance to clear the altimeter's opening (check the image for reference). Finally restart it.

Let me know how it goes.