this post was submitted on 31 Mar 2026
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metric is so much more simpler,
For temperature, not really. Both Celsius and Fahrenheit are useful for different things.
Fahrenheit is great for what we feel (it's related to body temperature for the high end, and the freezing point of brine on 0).
Celsius is great for cooking, or applications where you care about what water is doing (0 is freezing, 100 is boiling).
Neither uses different scales, like other metric units increasing by 10s (at least, I've never seen anything like kC). If you're doing that, you're using Kelvin, which is a fundamental base temperature, where 0 is actually 0, which makes more sense for physics and math, but is less useful for what we feel.
I think the US should switch, just to make it easier to communicate, and other metric scales actually are better. C and F are both equally useful for different things though. Neither is actually a better scale.
As someone who grew up with Fahrenheit, it's an arbitrary scale. 0 is the "coldest thing" that he could create in a lab at the time, basically a bath of ice and salt water, 100-ish was supposed to be the temperature of a healthy human body. They are unrelated things. It has nothing to do with "what we feel", people only think that because they grew up with it. The same can be said for all imperial measurements because there is no other way to say that 12 inches to a foot and 3 feet to a yard is "intuitive".
Celsius putting freezing at 0 and boiling at 100 (at sea level) are related to each other because it's measuring the temperature of water the entire time and then setting that as a the literal metric we use to measure other things.
I switched to Celsius for a couple of years and after going through a couple of seasons or two I had an intuitive feeling for what a value would feel like. It made perfect sense. I only stopped using it because my phone switched back one day for some reason and I was tired of having to convert to freedom units to avoid getting odd reactions from people.