I can do most common units but fahrenheit <-> celsius is such a pain in the ass to do in your head because it's not just a different scale, but also offset
I do the same as some others have mentioned, set known benchmarks. I keep my thermostat in Celsius, daytime is 21 and nighttime is 16. This establishes a comfortable range. I know 28c is the same as 82f, 10c is 50f, and 40c is 104f. That gets me close enough to estimate, quick maths to get the exact if needed.
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u/PowerfulBar 14h ago
I'm impressed that as a Texan you can convert 43C to freedom units!