How can I change the Unit System?

How to change the Unit System from ml to fl. oz and vice versa:
Navigate to “Settings” – “Account” – “Unit System” and choose Metric System (ml/l) or US System (fl. oz).

Tip for all users who read this within the Hydro Coach app:
You will find a video tutorial on our Website. Therefor touch the earth-symbol at the right upper corner.