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Standard International Paper Sizes

SizeInchesMillimeters
A48-1/4 x 11-3/4210 x 297
A55-7/8 x 8-1/4148 x 210
A64-1/8 x 5-7/8105 x 148
A72-15/16 x 4-1/874 x 105

Detailed Measurements for International Paper Sizes & Envelopes.

There are three ranges of sizes, prefixed A, B and C. The most widely used for general printing and letterhead stationery is the A series. The international letterhead size is an A4.Explore Neenah’s extensive selection of quality paper and envelopes to find the right fit for your mailing needs.

Standard International Paper Sizes

Standard International Paper Sizes

SizeInchesMillimeters
A033-1/8 x 46-13/16841 x 1188
A123-3/8 x 33-1/8594 x 841
A216-1/2 x 23-3/8420 x 594
A311-3/4 x 16-1/2297 x 420
A48-1/4 x 11-3/4210 x 297
A55-7/8 x 8-1/4148 x 210
A64-1/8 x 5-7/8105 x 148
A72-15/16 x 4-1/874 x 105
A82-1/16 x 2-15/1652 x 74

Standard International Envelope Sizes

SizeInchesMillimetersSuitable Paper Formats
C412-3/4 x 9324 x 229Flat A4 or A3 folded once
C56-3/8 x 9162 x 229Flat A5, A4 folded once, or A3 folded twice
C64-1/2 x 6-3/8114 x 162Flat A6, A5 folded once, or A4 folded twice
C7/63-1/2 x 6-1/289 x 1651/3 A4
DL4-1/4 x 8-5/8110 x 220A5 folded once or A4 folded twice

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