[bluGill]

US is a mix of measures. Imperial is allowed, but there are only a few places where it is required. Metric is in fact very common - but only for measures not in day to day use (that is intentionally contradictory have fun figuring it out)

[benj111]

In Europe theres regulations over labelling etc.

In the UK if you buy a 'pint' of milk it will still be labelled 0.568 litres.

Presumably there are some rules in the US also, or labels could just use some obscure measures that hide what a product contains.

[vinay427]

Yes, there are definitely rules. Virtually every product on store shelves in the US seems to be labeled with metric or imperial units depending on what is more convenient or less obscure to the public, though sizes for many products are the same across the oceans which can make for weird numbers for everyone.

Labeling definitely isn't always imperial in the US, and it isn't always metric in many European countries. Regulations tend to do a good job of avoiding units that are obscure in that they're rarely used for the specific purpose in question or would have clumsy numbers like the pint to liters conversion you noted.

e.g. A common PET bottle size in the US and elsewhere is 0.5L, which in the US is labeled as "0.5L"/"500mL" usually along with the, in my opinion, somewhat pointless "16.9 fl oz". Meanwhile, a 2L PET bottle is also common in the US and is labeled (and known by virtually everyone) as "2L".

[NullPrefix]

>which in the US is labeled as "0.5L"/"500mL" usually along

I hope that you mean it's labeled as 0.5L or 500mL and not both of them with a slash.

[vinay427]

Yes, exactly. I was hoping my quotes helped clarify that but I can see how it's unclear...