You can make the temperature dial of an oven have matching degrees of rotation and degrees Celcius.

Turn the dial to point straight down to bake at 180°

Turn it 3/4 of the way to cook a pizza at 270°

You could bake something at 420 Celsius too, assuming your okay with charcoal as the end product

ok you actually convinced me, Fahrenheit is better (except I can’t spell it properly without autocorrect)

you can also bake things at 420C if you’re not a coward about this (like proper thin pizza) (maybe it’s a bit too high but you get the idea)