Eh American temperatures just sound confusing.

I’ll see headlines like “Record breaking weather over 104 degrees “ and think holy shit people must be dying, and it’s just like only bloody 40 degrees.

American living in Canada here. It took me a couple of months at most to get used to both. I still couldn’t give you an accurate conversion between metric and imperial, but my brain understands the metric units now. It’s just a matter of using the units in everyday life.

Speed and distance were probably the easiest ones for me. You set your car’s dash to use km/h instead of mph. Then you just follow the road laws like normal. If it says the speed limit is 100 km/h, you just don’t let the number on the dash go much above that. Or you just drive the same speed everyone else does like you do on American roads anyway.

Temperature was a bit more confusing, but you pretty quickly learn that you’ll be happy if you set the thermostat to 18-24 and that if the temperature outside hits 30, it’s going to be a hot day. That kind of precision is more than enough for your mind.

I genuinely used to think I’d have a hard time switching to metric for most things. In my mind, I’d always have to be converting things back to imperial in my head. But that just isn’t the way it works. You quickly just start to relate the units to the real world and you understand it pretty quick.

"Making sense" is probably a habit, but all the units in Si are made so they are easy to convert to and from. Temperature included. So there's practicality tied to it. Just like 1l of water is also 1kg of water, which is also 1000cm³ of water. Same thing goes with temperature where Celsius is tied to transition states of the water, 0° for freezing, 100°C for boiling/gas. But it's not as tightly related as other units and even more rarely used for conversion. For us in the Si world it makes sense because everything is in scales of 100 or 1000, with definite start and end.