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INI

Paper Size Standards - INI

Paper size standards are a system of specifications that define the dimensions of paper used for documents and printed materials. Internationally, the ISO 216 standard (A series, B series, C series) is widely adopted, and in Japan, domestic standards are established as JIS P 0138. These standards are based on an aspect ratio of 1:√2 (approximately 1:1.414), featuring the characteristic of being able to be cut in half while maintaining the same proportions. North America uses unique standards such as Letter, Legal, and Tabloid sizes.

paper size ISO 216 JIS standard A series B series printing stationery standard 
[item.a0]
code=A0
slug=a0
name=A0
description=Base size of A series. Area is approximately 1 square meter.
dimensions_inch=33.11 × 46.81
dimensions_mm=841 × 1189
series=A
standard=ISO 216 / JIS P 0138

[item.a1]
code=A1
slug=a1
name=A1
description=Half the size of A0. Used for advertising posters and displays.
dimensions_inch=23.39 × 33.11
dimensions_mm=594 × 841
series=A
standard=ISO 216 / JIS P 0138

[item.a2]
code=A2
slug=a2
name=A2
description=Half the size of A1. Used for wall calendars and posters.
dimensions_inch=16.54 × 23.39
dimensions_mm=420 × 594
series=A
standard=ISO 216 / JIS P 0138

[item.a3]
code=A3
slug=a3
name=A3
description=Half the size of A2. Used for restaurant menus and flyers.
dimensions_inch=11.69 × 16.54
dimensions_mm=297 × 420
series=A
standard=ISO 216 / JIS P 0138

[item.a4]
code=A4
slug=a4
name=A4
description=The most common paper size. Standard for copy paper and office documents.
dimensions_inch=8.27 × 11.69
dimensions_mm=210 × 297
series=A
standard=ISO 216 / JIS P 0138

[item.a5]
code=A5
slug=a5
name=A5
description=Half the size of A4. Used for specialized books and business notebooks.
dimensions_inch=5.83 × 8.27
dimensions_mm=148 × 210
series=A
standard=ISO 216 / JIS P 0138

[item.a6]
code=A6
slug=a6
name=A6
description=Half the size of A5. Used for paperbacks and postcards.
dimensions_inch=4.13 × 5.83
dimensions_mm=105 × 148
series=A
standard=ISO 216 / JIS P 0138

[item.a7]
code=A7
slug=a7
name=A7
description=Half the size of A6. Used for business cards and index cards.
dimensions_inch=2.91 × 4.13
dimensions_mm=74 × 105
series=A
standard=ISO 216 / JIS P 0138

[item.a8]
code=A8
slug=a8
name=A8
description=Half the size of A7. Used for small cards and labels.
dimensions_inch=2.05 × 2.91
dimensions_mm=52 × 74
series=A
standard=ISO 216 / JIS P 0138

[item.a9]
code=A9
slug=a9
name=A9
description=Half the size of A8. Used for small labels and tags.
dimensions_inch=1.46 × 2.05
dimensions_mm=37 × 52
series=A
standard=ISO 216 / JIS P 0138

[item.a10]
code=A10
slug=a10
name=A10
description=Half the size of A9. Used for tiny labels and tags.
dimensions_inch=1.02 × 1.46
dimensions_mm=26 × 37
series=A
standard=ISO 216 / JIS P 0138

[item.b0]
code=B0
slug=b0
name=B0
description=Base size of B series. Area is approximately 1.5 square meters.
dimensions_inch=40.55 × 57.32
dimensions_mm=1030 × 1456
series=B
standard=JIS P 0138

[item.b1]
code=B1
slug=b1
name=B1
description=Half the size of B0. Used for station posters.
dimensions_inch=28.66 × 40.55
dimensions_mm=728 × 1030
series=B
standard=JIS P 0138

[item.b2]
code=B2
slug=b2
name=B2
description=Half the size of B1. Used for advertising posters and displays.
dimensions_inch=20.28 × 28.66
dimensions_mm=515 × 728
series=B
standard=JIS P 0138

[item.b3]
code=B3
slug=b3
name=B3
description=Half the size of B2. Used for train hanging advertisements.
dimensions_inch=14.33 × 20.28
dimensions_mm=364 × 515
series=B
standard=JIS P 0138

[item.b4]
code=B4
slug=b4
name=B4
description=Half the size of B3. Used for newspaper insert flyers and manuscript paper.
dimensions_inch=10.12 × 14.33
dimensions_mm=257 × 364
series=B
standard=JIS P 0138

[item.b5]
code=B5
slug=b5
name=B5
description=Half the size of B4. Used for university notebooks and weekly manga magazines.
dimensions_inch=7.17 × 10.12
dimensions_mm=182 × 257
series=B
standard=JIS P 0138

[item.b6]
code=B6
slug=b6
name=B6
description=Half the size of B5. Used for hardcover books and planners.
dimensions_inch=5.04 × 7.17
dimensions_mm=128 × 182
series=B
standard=JIS P 0138

[item.b7]
code=B7
slug=b7
name=B7
description=Half the size of B6. Passport size.
dimensions_inch=3.58 × 5.04
dimensions_mm=91 × 128
series=B
standard=JIS P 0138

[item.b8]
code=B8
slug=b8
name=B8
description=Half the size of B7. Playing card size.
dimensions_inch=2.52 × 3.58
dimensions_mm=64 × 91
series=B
standard=JIS P 0138

[item.b9]
code=B9
slug=b9
name=B9
description=Half the size of B8. Used for small labels.
dimensions_inch=1.77 × 2.52
dimensions_mm=45 × 64
series=B
standard=JIS P 0138

[item.b10]
code=B10
slug=b10
name=B10
description=Half the size of B9. Used for tiny labels and stamps.
dimensions_inch=1.26 × 1.77
dimensions_mm=32 × 45
series=B
standard=JIS P 0138

[item.us-letter]
code=Letter
slug=us-letter
name=Letter
description=The most common paper size in North America.
dimensions_inch=8.5 × 11
dimensions_mm=216 × 279
series=US
standard=ANSI/ASME Y14.1

[item.us-legal]
code=Legal
slug=us-legal
name=Legal
description=Paper size for legal documents used in North America.
dimensions_inch=8.5 × 14
dimensions_mm=216 × 356
series=US
standard=Traditional US

[item.us-tabloid]
code=Tabloid
slug=us-tabloid
name=Tabloid
description=Large format paper size used in North America.
dimensions_inch=11 × 17
dimensions_mm=279 × 432
series=US
standard=ANSI/ASME Y14.1