I am use the Garmin Connect web portal, the Connect app, various Edge cycling devices, a Venu X1, and a Forerunner watch.
The Edge devices allow me to select the units of measure individually for distance and speed, elevation, temperature, weight, height. position format, and time format.
The Connect portal and apps allow only metric, statute, and UK statute selections.
The Venu provides options for distance, pace/speed, elevation, depth, weight, height, temperature, swim totals, pressure, vertical speed.
It would be helpful if the portal and apps would catch up with the devices in terms of user selection of units of measure. Perhaps make this a design principal?