Google "XF to C". That easy.

Every time. I never use freedom units so if I read some reference points I'll forget them by the time I read the next freedom unit. I only know my height and what an inch is because of phones and screens.

Feet are not intuitive at all either, my gf has 5 on the US scale and I have 13.5, one is 22cm and the other is 31cm. That's a huge margin on what the us feet unit actually is. Turns out that feet are 30.48cm, so basically my feet is actually a us feet, yay. I'll forget this tomorrow. cm is arbitrary too, yeah, but at least it has the ease of conversion.