Inspire HR distance inquiry

[banjoboy54]

Connected to iPhone w/ IOS 13.7. For my morning walk, I turn Inspire HR stopwatch on and off. It registers about 8,000 steps and about 3.2 miles. Is the mileage determined by GPS and therefore accurate? Or determined by number of steps and stride length? The answer to this rookie question is probably on here somewhere, but I can't find it. thanks.

Banjoboy54

Moderator Edit: Clarified subject

[AlejandraFitbit]

It's great to see you around, @banjoboy54.

Fitbit devices calculate distance based on the device’s accelerometer data and stride length setting.

Default stride length is based on your height and gender. If available, Fitbit devices use GPS data to calculate more precise distances.When you sync your device, our algorithm interprets the data from the device, and you see your distance traveled in the Fitbit app. 

Note that when you track an exercise with GPS, both GPS and accelerometer data are used to calculate the distance shown in the Fitbit app. For more information about accuracy, check the article: How accurate are Fitbit devices?.

Let me know if you need anything else.