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description=Find exact C Envelope paper sizes in millimeters, centimeters, and inches. Your free, comprehensive guide to international paper standards and dimensions for printing and design.;

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compare mm mm cm m inches pt pc px 300dpi a b us c envelope photography us envelope international envelope books newspaper business card colombian chinese french din japanese transitional swedish imperial billboard raw canadian traditional british more c envelope paper sizes c5 162 x 229 mm c4 229 x 324 mm c6 114 x 162 mm c3 324 x 458 mm c7 81 x 114 mm c2 458 x 648 mm c8 57 x 81 mm c1 648 x 917 mm c9 40 x 57 mm c0 917 x 1297 mm c10 28 x 40 mm information the dimensions of the c series sizes are defined by the iso 269 paper size standard the c series is most commonly used for envelopes the area of c series paper is the geometric mean of the areas of the a and b series paper of the same number for example c4 has a bigger area than a4 but smaller area than b4 therefore an a4 piece of paper will fit into a c4 envelope the aspect ratio of c series envelopes is 1 2 and this means that an a4 sheet of paper when folded in half parallel to its smaller sides will fit nicely into a c5 envelope when it is folded twice it will fit into a c6 envelope and so on format width x height mm width x height inches c5 162 x 229 6 38 x 9 02 c4 229 x 324 9 02 x 12 76 c6 114 x 162 4 49 x 6 38 c3 324 x 458 12 76 x 18 03 c7 81 x 114 3 19 x 4 49 c2 458 x 648 18 03 x 25 51 c8 57 x 81 2 24 x 3 19 c1 648 x 917 25 51 x 36 1 c9 40 x 57 1 57 x 2 24 c0 917 x 1297 36 1 x 51 06 c10 28 x 40 1 1 x 1 57 2026 papersizes io about privacy cookie policy x en es de हिंदी 简体 繁體 c envelope paper sizes c5 c4 c6 c3 c7 c2 c8 c1 c9 c0