this post was submitted on 30 Aug 2026
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What on earth are you on about with those numbers? ๐
A0 is the base size, with an area of one square meter. Fold that in half and you get A1. Fold that in half and you get A2, and so on. Regular printer paper is A4. Youโll rarely, if ever, see sizes smaller than A6.
I fat-fingered the A5, otherwise the numbers were right?
I'm aware how the system works, I just wrote about it using A4 as the "base". A3 is what you fold to get A4, A2 folds to give A3, etc.
I didn't know A0 was exactly 1m^2^ though, TIL!
This made it sound like you meant that folding an A3 sheet twice gives A2 ๐ Might just be my reading comprehension, though!
Nah, your reading comprehension is just fine, I just worded myself in a pretty verbal way. I totally get how it could be misread, I was thinking along the "salesman making a pitch" line:
"Want something that folds perfectly to A4? A3. Want an extra fold before you get there? We have A2!"