I had assumed as much, but wasn't sure. After all, the US uses not only different units (mi vs km, yards vs meters) but also different symbols for the same uni

I had assumed as much, but wasn't sure. After all, the US uses not only different units (mi vs km, yards vs meters) but also different symbols for the same units (kph vs km/h, sqm vs m², "klicks" vs km). I've even seen americans use "mt" for metric tons.