I switched to using primarily Celsius a year or two ago. It's been tremendously useful for me, moreso than switching to metres (which I've been doing as well,

I switched to using primarily Celsius a year or two ago. It's been tremendously useful for me, moreso than switching to metres (which I've been doing as well, though not as aggressively). Like most tech companies we have to frequently interact internationally, and everyone uses metric outside of the U.S. Knowing Celsius has made even basic conversations easier. I mean, "How's the weather where you are?" is such a common conversation starter, and it's one I can actually meaningfully have with people outside the U.S. now. No more "oh, pretty hot", instead I can just say "It's over 35 here!" And as an engineer I obviously need to deal with metric for most everything (except those damned PCBs; thou, really!?), so it's very useful to have an intuitive understanding of what temperature my chip is at, or how thick 3mm is without grabbing a ruler. Switching to Celsius is also a lot easier than switching to metres. You can get through a day using only Celsius, but you'll have a lot of trouble traveling around in a car using metres.