<\/span><\/h3>\n<\/li>\n<\/ul>\nIn Taiwan, when you buy paper at a store, you often see sizes marked as “1K,” “2K,” etc. These specifications apply to Kikuban (GK) and Shirokuban formats, both of which have been used since the Japanese colonial period. The Kikuban size is closer to the ISO A series, while the Shirokuban size aligns more closely with the ISO B series.<\/p>\n
\ud83d\udca1 <\/b>Reminder: Manufacturers may slightly adjust the sizes of Kikuban (GK) and Shirokuban formats to align with ISO international standards or printed product dimensions. Therefore, the dimensions from different manufacturers might vary slightly, so it’s essential to pay extra attention when comparing sizes.<\/p>\n<\/span>Paper Size Comparison Chart: Understanding A, B, C Series, Kikuban, and Shirokuban at a Glance!<\/span><\/h2>\nAfter understanding the classification of paper sizes, let’s examine the detailed size comparison chart.<\/p>\n
<\/span>Here’s a quick overview of ISO standard sizes. You can quickly master the dimensions of A0, A1, A3, A4, and A5 paper sizes.<\/span><\/h3>\n\n\n\n| Spec<\/b><\/td>\n | A Series\uff08mm\uff09<\/b><\/td>\n | B Series\uff08mm\uff09<\/b><\/td>\n | C Series\uff08mm\uff09<\/b><\/td>\n<\/tr>\n\n| Size Illustration Diagram<\/td>\n | ![\"\u7d19\u5f35\u5c3a\u5bf8\uff0dA\u7cfb\u5217\uff08mm\uff09\"](\"https:\/\/leatai.com\/wp-content\/uploads\/\/\u7d19\u5f35ISO\u5c3a\u5bf8-A-480x800.jpg\") <\/td>\n | ![\"\u7d19\u5f35\u5c3a\u5bf8\uff0d\uff22\u7cfb\u5217\uff08mm\uff09\"](\"https:\/\/leatai.com\/wp-content\/uploads\/\/\u7d19\u5f35ISO\u5c3a\u5bf8-B-593x800.jpg\") <\/td>\n | ![\"\u7d19\u5f35\u5c3a\u5bf8\uff0dC\u7cfb\u5217\uff08mm\uff09\"](\"https:\/\/leatai.com\/wp-content\/uploads\/\/\u7d19\u5f35ISO\u5c3a\u5bf8-C-513x800.jpg\") <\/td>\n<\/tr>\n | \n| 0<\/span><\/td>\n | 841 x 1189<\/span><\/td>\n | 1000 x 1414<\/span><\/td>\n | 917 x 1297<\/span><\/td>\n<\/tr>\n\n| 1<\/span><\/td>\n | 594 x 841<\/span><\/td>\n | 707 x 1000<\/span><\/td>\n | 648 x 917<\/span><\/td>\n<\/tr>\n\n| 2<\/span><\/td>\n | 420 x 594<\/span><\/td>\n | 500 x 707<\/span><\/td>\n | 458 x 648<\/span><\/td>\n<\/tr>\n\n| 3<\/span><\/td>\n | 297 x 420<\/span><\/td>\n | 353 x 500<\/span><\/td>\n | 324 x 458<\/span><\/td>\n<\/tr>\n\n| 4<\/span><\/td>\n | 210 x 297<\/span><\/td>\n | 250 x 353<\/span><\/td>\n | 229 x 324<\/span><\/td>\n<\/tr>\n\n| 5<\/span><\/td>\n | 148 x 210<\/span><\/td>\n | 176 x 250<\/span><\/td>\n | 162 x 229<\/span><\/td>\n<\/tr>\n\n| 6<\/span><\/td>\n | 105 x 148<\/span><\/td>\n | 125 x 176<\/span><\/td>\n | 114 x 162<\/span><\/td>\n<\/tr>\n\n| 7<\/span><\/td>\n | 74 x 105<\/span><\/td>\n | 88 x 125<\/span><\/td>\n | 81 x 114<\/span><\/td>\n<\/tr>\n\n| 8<\/span><\/td>\n | 52 x 74<\/span><\/td>\n | 62 x 88<\/span><\/td>\n | 57 x 81<\/span><\/td>\n<\/tr>\n\n| 9<\/span><\/td>\n | 37 x 52<\/span><\/td>\n | 44 x 62<\/span><\/td>\n | 40 x 57<\/span><\/td>\n<\/tr>\n\n| 10<\/span><\/td>\n | 26 x 37<\/span><\/td>\n | 31 x 44<\/span><\/td>\n | 28 x 40<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/span>Common Paper Sizes Chart in Taiwan: Understanding 4K, 8K, 16K<\/b><\/span><\/h3>\n\n\n\n| Kikuban size<\/td>\n | centimeters<\/td>\n | Shirokuban size<\/td>\n | centimeters<\/td>\n<\/tr>\n | \n| G1K<\/span><\/td>\n | 63.5 x 88.9<\/span><\/td>\n | 1K<\/span><\/td>\n | 78.7 x 109.2<\/span><\/td>\n<\/tr>\n\n| G2K<\/span><\/td>\n | 44.45 x 63.5<\/span><\/td>\n | 2K<\/span><\/td>\n | 54.6 x 78.7<\/span><\/td>\n<\/tr>\n\n| G4K<\/span><\/td>\n | 31.75 x 44.45<\/span><\/td>\n | 4K<\/span><\/td>\n | 39.4 x 54.6<\/span><\/td>\n<\/tr>\n\n| G8K<\/span><\/td>\n | 22.23 x 31.75<\/span><\/td>\n | 8K<\/span><\/td>\n | 27.3 x 39.4<\/span><\/td>\n<\/tr>\n\n| G16K<\/span><\/td>\n | 15.88 x 22.23<\/span><\/td>\n | 16K<\/span><\/td>\n | 19.69 x 27.3<\/span><\/td>\n<\/tr>\n\n| G32K<\/span><\/td>\n | 11.18 x 15.88<\/span><\/td>\n | 32K<\/span><\/td>\n | 13.67 x 19.69<\/span><\/td>\n<\/tr>\n\n| G64K<\/span><\/td>\n | 7.95 x 11.18<\/span><\/td>\n | 64K<\/span><\/td>\n | 9.86 x 13.67<\/span><\/td>\n<\/tr>\n\n| G128K<\/span><\/td>\n | 5.59 x 7.95<\/span><\/td>\n | 128K<\/span><\/td>\n | 6.83 x 9.98<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n <\/p>\n <\/span>How do you convert A4, B5, 8K, and 16K? Comprehensive Paper Size Conversion Table<\/span><\/h3>\nWith so many paper-size specifications, can they be converted? As mentioned, Kikuban is closer to the ISO A series, while Shirokuban aligns more with the ISO B series. Thus, if you want to compare standard sizes, the table below may help:<\/p>\n \n\n\n| Standard Sizes<\/b><\/td>\n | Corresponds to Kikuban<\/td>\n | Corresponds to Shirokuban<\/td>\n<\/tr>\n | \n| A4<\/span><\/td>\n | G8K<\/span><\/td>\n | 10K<\/span><\/td>\n<\/tr>\n\n| A5<\/span><\/td>\n | G16K<\/span><\/td>\n | 25K<\/span><\/td>\n<\/tr>\n\n| A6<\/span><\/td>\n | G36K<\/span><\/td>\n | 49K<\/span><\/td>\n<\/tr>\n\n| B4<\/span><\/td>\n | G4K<\/span><\/td>\n | 8K<\/span><\/td>\n<\/tr>\n\n| B5<\/span><\/td>\n | G8K<\/span><\/td>\n | 16K<\/span><\/td>\n<\/tr>\n\n| B6<\/span><\/td>\n | G25K<\/span><\/td>\n | 36K<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/span>A4 Size, B5 Size, A5 Size: The Three Most Confusing Paper Sizes<\/span><\/h2>\n\n- \n
<\/span>A4 Size:<\/span><\/h3>\n21 cm x 29.7 cm, the most commonly used paper size internationally.<\/li>\n - \n
<\/span>B5 Size:<\/span><\/h3>\n17.6 cm x 25.0 cm, commonly called 16K size in Taiwan for custom notebooks.<\/li>\n - \n
<\/span>A5 Size:<\/span><\/h3>\n14.8 cm x 21.0 cm, commonly referred to as 25K size in Taiwan for custom notebooks.<\/li>\n<\/ul>\n <\/span>Common Paper Size Applications: Must-Read for Printing and Design Professionals<\/span><\/h2>\nWhere are the different sizes of paper commonly used? What size books do we usually read? Let’s explore the typical applications of various paper sizes:<\/p>\n \n- \n
<\/span>A series, Kikuban \u279c Documents, books, and magazines.<\/b><\/span><\/h3>\n<\/li>\n<\/ul>\nGenerally, the A series sizes, such as A4 and A5, are most commonly used for printing documents. These dimensions are also frequently used for producing books, manuals, and magazines.<\/p>\n A4 is one of daily life’s most standard paper sizes, measuring approximately 21 x 29.7 centimeters. This paper is widely used for printing, copying, and document filing. Its moderate size makes it easy to carry while accommodating enough content, making it suitable for various office and academic purposes. Whether writing reports, designing presentations, or creating posters, A4-sized paper is an ideal choice.<\/p>\n \n- \n
<\/span>B series, Shirokuban \u279c Posters, art papers, or commercial advertisements.<\/b><\/span><\/h3>\n<\/li>\n<\/ul>\nThe B series is commonly used for posters, art papers, or commercial advertisements. Additionally, B5 is also a popular size for printing purposes.<\/p>\n \n- \n
<\/span>C Series \u279c Envelope<\/b><\/span><\/h3>\n<\/li>\n<\/ul>\nThe C series is mainly used for making envelopes and can correspond to the A series paper sizes. For example, if the letter paper is A4 size, a C4-size envelope can be chosen; if the letter paper is folded in half to A5 size, a C5-size envelope would be suitable.<\/p>\n Extended Content for Leatai Paper Size Guide<\/h1>\n<\/span>\ud83d\udcd8 A5 vs B5 Paper Size \u2013 Which One Should You Choose?<\/span><\/h2>\nWhile A4 is widely known, many notebook lovers prefer A5<\/strong> or B5<\/strong> for personal use. Here’s a closer comparison:<\/p>\n\n \n \n\n\n| Feature<\/th>\n | A5 Paper Size<\/th>\n | B5 Paper Size<\/th>\n<\/tr>\n<\/thead>\n | \n\n| Dimensions (cm)<\/td>\n | 14.8 x 21.0<\/td>\n | 17.6 x 25.0<\/td>\n<\/tr>\n | \n| Dimensions (in)<\/td>\n | 5.8 x 8.3<\/td>\n | 6.9 x 9.8<\/td>\n<\/tr>\n | \n| Best For<\/td>\n | Portable journals<\/td>\n | Academic planners<\/td>\n<\/tr>\n | \n| Portability<\/td>\n | \u2714\ufe0f Easy to carry<\/td>\n | Moderate<\/td>\n<\/tr>\n | \n| Writing Space<\/td>\n | \ud83d\udfe1 Compact<\/td>\n | \u2705 More generous<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n <\/div>\n<\/div>\n<\/div>\n<\/div>\n A5<\/strong> is ideal for minimalist planners and travel notebooks, while B5<\/strong> offers a balance of space and manageability\u2014great for school or work.<\/p>\n
\n<\/span>\ud83d\udcd8 A4 vs Letter Size \u2013 What\u2019s the Difference?<\/span><\/h2>\nThough they appear similar, A4<\/strong> and US Letter<\/strong> are different in dimensions:<\/p>\n\n | | | | | | | | | | | | | | | | | | | | | | | | | | |
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