Garmin has my height so it should be able to calculate BMI for my weight uploads. It does this in some places but not in all.
When I look at the "My Day" weight summary page, BMI is "--".
When I look at the 1d weight page, there's no BMI listed.
When I look at the 7d, and 4w graphs, I can see the average BMI listed below with the other averaged metrics, but I cannot see a plot of BMI in the graph.
When I look at the 1y page, I can see a plot of the BMI (presumably because it is the averages, and not the individual data points like the 7d and 4w charts).
When I look at the Garmin Connect Web app, I can see BMI listed for today's weighin (under the graph), but I'm not able to plot BMI in the graph.
I upload my weighins to garmin connect in .fit file format and do not include BMI.
As far as I know, the .fit spec doesn't support a BMI field.