I know the A-series is more common, but I sometimes prefer the B-series. It’s nice if, for example, you’re looking for something between A4 and A5 (i.e. B5).

Individual images made by Wikipedia user Bromskloss (CC BY-SA 3.0)

  • @Stety
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    21 year ago

    Is it just the size difference or is the ratio also different? I am too tired to grab my calculator.

    • @[email protected]OP
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      41 year ago

      It’s the same, the difference is the starting “0” size. For the A-series, the area is 1 m^2. For the B-series, the shorter side length is 1 m. The C-series is the geometric mean of the areas of the A- and B-series.

    • @apollo440
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      31 year ago

      It’s sqrt(2) for all formats. As you may know, that means you can fold it in half and still have an aspect ratio of sqrt(2).