Paper Sizes纸张尺寸

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A series The A Series is based on A0(841*1189mm) which is the equivalent of a square metre in area, and each smaller size,A1,A2,ect.Is equal to half the area of the preceding larger size.
Code millinetres Code millinetres Code millinetres
2A 1189*1862  A3 297*420 A7  74*105
A0 841*1189  A4 210*297 A8  52*74  
A1 594*841  A5 148*210 A9  37*52  
A2 420*594  A6 105*148 A10  26*37  


B series The B Series is intended primarily for posters, wall charts, and similar items where the difference in size of the larger sheets in the A series represents too large a jump.
Code millinetres Code millinetres
4B 2000*2828  B2 500*707
2B 1414*2000  B3 353*500
B0 1000*1414  B4 250*353
B1 707*1000  B5 176*250


C series This is for envclopes or folders suitable for enclosing stationery in the A series.
Code millinetres Code millinetres
C3 324*458 C6  114*162  
C4 229*324 C7  81*114  
C5 162*229 *DL  110*220