Ionic not calculating miles properly

[Sriram-V]

I have a fitbit ionic and the no of miles is not being calculated properly.

Eg I have walked over 16,000 steps but it calculates that to 2.5 miles.

I am not able to set the strides to 0. Is there any other way to accurately calculate the miles 

Thanks,

Moderator edit: subject for clarity 

[LiliyaFitbit]

Welcome to the Fitbit Community, @Sriram-V.

Thanks for the details shared in your post. I understand your concern and if you've set up your own stride length, I recommend confirming if it is correct. The average person's walking step length is 2.5 feet (30 inches) and you can confirm the steps to calculate it in Can I change my stride length in my Fitbit account?

I was able to see that you have already contacted our Support team regarding this. Thank you for your time and efforts. 

Hope this helps!