> I was born and raised in the UK, and honestly I think we have it worse than the US.

Try being in Canada.

Your weight and height are in feet-inches and pounds. When driving though you use kilometres and litres to fill up a tank, but often use miles-per-gallon for measuring car efficiency (though L/100km is popular too).

Most construction is done with US as well (1x6', 2x4'--with the dimensions usually being 'nominal' and not actually those lengths):

* https://en.wikipedia.org/wiki/Lumber#North_American_softwood...

Of course no one in the US has a kitchen scale, so most cooking recipes are done via volumetric cups, but baking is done by weight/mass. Of course there are two types of ounces: fluid and non-fluid as well. Preheat your oven to 350F or 400F....