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Paper Sizes Explained
- HelloNurse 5y agoRegarding A, B and C ISO sizes, they aren't mysterious: - the aspect ratio is square root of 2 to 1, so that cutting in half the long side leaves two sheets with the same aspect ratio. - A is the main series, with A0 approximately one square meter. - B sizes are square root of 2 times larger in area than A formats with the same numbers, filling the gaps. - C sizes are slightly larger than A sizes, suitable for containers, envelopes etc. for them.
- JNRowe 5y agoMarkus Kuhn’s International Standard Paper Sizes¹ is a great document on ISO-216 paper sizes, if you want a little more depth than HelloNurse’s succinct description. It also covers US-style sizes toward the bottom. Kuhn also has an excellent ISO-8601 document², which makes you wish he would dive through more of the common standards that ISO stand guard over. ¹ https://www.cl.cam.ac.uk/~mgk25/iso-paper.html https://www.cl.cam.ac.uk/~mgk25/iso-paper.html ² https://www.cl.cam.ac.uk/~mgk25/iso-time.html https://www.cl.cam.ac.uk/~mgk25/iso-time.html - Sadly only covers timestamps, not durations/intervals/etc
- litoE 5y agoNow I'm confused. The article says at one point that ANSI "letter" is 8 1/2 inches by 12 2/3 inches and also that "letter" size is 8 1/2 inches by 11 inches without explaining the discrepancy. So which is it?