What is the B Series?
The B Series is a paper size standard defined by ISO 216. It is designed to provide sizes that are larger than the A Series at the same number. B Series sizes are based on the geometric mean between consecutive A Series sizes, making them ideal for posters, books, and large-format printing.
Geometric Mean
The B Series is based on the geometric mean of the A Series. B0 is the geometric mean of A0 and A1, making B Series sizes uniquely positioned between A sizes.
Book & Poster Standard
B Series sizes are widely used for books, posters, and large-format printing. B5 is a common notebook size, while B2 and B3 are popular for posters.
Global Standard
The B Series is used worldwide alongside the A Series. It ensures compatibility across international borders for publishing and professional printing.
B Series Paper Sizes
Complete reference for all B Series paper sizes with dimensions in mm and inches.
๐ Complete B Series Size Table
Detailed comparison of all B Series sizes with A Series equivalents and pixel dimensions at 300 DPI.
| Size | mm | inches | A Series Equivalent | Pixels @300 DPI |
|---|---|---|---|---|
| B0 | 1000 ร 1414 | 39.4 ร 55.7 | Between A0 and A1 | 11811 ร 16701 |
| B1 | 707 ร 1000 | 27.8 ร 39.4 | Between A1 and A2 | 8350 ร 11811 |
| B2 | 500 ร 707 | 19.7 ร 27.8 | Between A2 and A3 | 5906 ร 8350 |
| B3 | 353 ร 500 | 13.9 ร 19.7 | Between A3 and A4 | 4170 ร 5906 |
| B4 | 250 ร 353 | 9.8 ร 13.9 | Between A4 and A5 | 2953 ร 4170 |
| B5 | 176 ร 250 | 6.9 ร 9.8 | Between A5 and A6 | 2079 ร 2953 |
| B6 | 125 ร 176 | 4.9 ร 6.9 | Between A6 and A7 | 1476 ร 2079 |
| B7 | 88 ร 125 | 3.5 ร 4.9 | Between A7 and A8 | 1040 ร 1476 |
| B8 | 62 ร 88 | 2.4 ร 3.5 | Between A8 and A9 | 732 ร 1040 |
| B9 | 44 ร 62 | 1.7 ร 2.4 | Between A9 and A10 | 520 ร 732 |
| B10 | 31 ร 44 | 1.2 ร 1.7 | Between A10 and A11 | 366 ร 520 |
๐ B Series Uses & Applications
Book Publishing
B5 is a standard book size, used for textbooks, novels, and publications. The B Series offers sizes that are well-suited for binding and printing.
Posters & Art
B2 and B3 are popular for posters, art prints, and exhibition materials. The larger sizes provide impact while remaining manageable.
Professional Printing
B Series is used in professional printing for brochures, catalogs, and marketing materials where larger formats are needed.
Notebooks & Stationery
B5 and B6 are common notebook sizes, offering more space than A5 while remaining portable.
Large Format Printing
B0 and B1 are used for billboards, banners, and large-scale displays where maximum visibility is required.
Envelopes & Packaging
B Series sizes are used for custom envelopes, packaging, and specialty printing where standard sizes don't fit.
๐ก Professional Tips for B Series
๐ฏ Choosing the Right Size
B Series is ideal when you need a size between A Series options. B5 is larger than A5 but smaller than A4, making it perfect for notebooks and booklets.
๐ Printing Considerations
B Series sizes require specific printer settings. Check your printer's capabilities before ordering large quantities, especially for B0 and B1.
๐ Book Binding
B5 is a standard book size, used for textbooks, novels, and publications. The B Series offers sizes that are well-suited for binding and printing.
๐จ Poster Design
B2 (500 ร 707 mm) is a popular poster size for events, exhibitions, and marketing. It provides good visibility while being easy to handle.
โป๏ธ Paper Quality
Choose high-quality paper for B Series prints, especially for large formats. Thicker paper prevents curling and provides a professional finish.