๐ B5 Paper
| Millimeters | 176 ร 250 mm |
| Centimeters | 17.6 ร 25.0 cm |
| Inches | 6.93 ร 9.84 in |
| Points | 499 ร 709 pt |
| Picas | 41.6 ร 59.1 pc |
| Pixels (300dpi) | 2079 ร 2953 px |
| Pixels (72ppi) | 499 ร 709 px |
๐ B4 Paper
| Millimeters | 250 ร 353 mm |
| Centimeters | 25.0 ร 35.3 cm |
| Inches | 9.84 ร 13.90 in |
| Points | 709 ร 1001 pt |
| Picas | 59.1 ร 83.4 pc |
| Pixels (300dpi) | 2953 ร 4170 px |
| Pixels (72ppi) | 709 ร 1001 px |
Area: 1 B4 = 2 ร B5 (double the area). Scaling factor: โ2 โ 1.4142 per side.
B5 is the go-to size for notebooks and textbooks โ this tool helps you scale up to B4 for professional printing and publishing.
B4 (area) = B5 ร 0.5 ยท Scale factor = โ2 โ 1.4142 per side1 B4 sheet has twice the area of 1 B5 sheet.
๐ What is B5 Paper Size?
B5 is a medium paper size in the ISO 216 B-series. Its dimensions are 176 ร 250 mm (6.9 ร 9.8 inches), with an area of 0.044 mยฒ. B5 is the go-to size for notebooks, textbooks, and professional publications. It's also popular for diaries, planners, and small-format books. B5 is exactly half the area of B4, making it a natural choice for portable documents and everyday use.
๐ What is B4 Paper Size?
B4 is a large paper size in the ISO 216 B-series. Its dimensions are 250 ร 353 mm (9.8 ร 13.9 inches), with an area of 0.088 mยฒ. B4 is the go-to size for magazines, large books, and professional publications. It's also popular for catalogs, brochures, and large-format marketing materials. B4 is exactly double the area of B5, making it a natural step up for more detailed content.
๐งฎ The Math: How B5 Becomes B4
The ISO 216 B-series is based on the geometric mean between A-series sizes. Each step up (B5 โ B4) doubles the area. The side lengths increase by a factor of โ2 โ 1.4142.
- Width: 176 mm ร โ2 โ 250 mm
- Height: 250 mm ร โ2 โ 353 mm
- Area: 0.044 mยฒ ร 2 = 0.088 mยฒ
Formula: 1 B4 = 2 ร B5 (in area). So, if you have 2 B5 sheets, they can be combined to form 1 B4 sheet (or 1 B5 = 0.5 B4).
๐ Quick Conversion Table: B5 to B4
| B5 Sheets | B4 Equivalent | Scale factor (side) | Realโworld use |
|---|---|---|---|
| 0.5 B5 | 0.25 B4 | 100% | Small notebook |
| 1 B5 | 0.5 B4 | 141.4% (enlarge) | Single notebook page |
| 2 B5 | 1 B4 | 200% (double width/height) | Full magazine page |
| 4 B5 | 2 B4 | 282.8% | Book spread |
| 5 B5 | 2.5 B4 | 316.2% | Small book signature |
| 10 B5 | 5 B4 | 447.2% | Book chapter |
| 25 B5 | 12.5 B4 | 707.1% | Book volume |
| 50 B5 | 25 B4 | 1000% | Large catalog |
๐จ๏ธ RealโWorld Examples: B5 to B4 in Action
- ๐ Book Publishing: B5 is a common size for notebooks and textbooks. When you need to scale up to B4 for larger editions or magazine-style publications, this converter tells you exactly how many B5 pages fit into a B4 layout.
- ๐ Notebooks & Diaries: B5 is the classic notebook size. B4 is used for larger journals and planners. Understanding the scaling helps with page layout and printing.
- ๐จ๏ธ Professional Printing: B5 is used for small catalogs and reference materials. B4 offers more space for detailed content. Convert between them for consistent branding.
- ๐จ Art & Photography: B5 prints are popular for small art pieces and postcards. B4 offers a larger format for exhibition catalogs and portfolios.
- ๐ Stationery: B5 is used for small stationery sets and compact publications. B4 is used for letterheads and larger correspondence.
๐ก Professional Tips for B5 to B4 Scaling
๐ฏ Resolution & Quality
When scaling from B5 to B4, if your original is 300 DPI, the resulting B4 will be ~212 DPI โ still acceptable for most printing. For high-quality prints, design at 600 DPI at B5 to get ~424 DPI at B4.
๐ BโSeries vs. AโSeries
B-series sizes are larger than A-series sizes at the same number. For example, B5 (176 ร 250 mm) is larger than A5 (148 ร 210 mm). B-series is often preferred for books because it's closer to traditional book sizes.
๐ฐ Printing Efficiency
Printing 2 B5 pages from 1 B4 sheet can save paper and costs. Many professional printers support B-series paper sizes โ check your printer settings.
๐ Book Production
B5 is a common size for notebooks and textbooks. When planning a book, understanding how B5 converts to B4 helps with production planning and page layout.
โ Frequently Asked Questions (B5 to B4)
Q: How many B5 sheets equal 1 B4?
A: Exactly 2 B5 sheets make 1 B4 in terms of area. You can fit two B5 pages on one B4 sheet.
Q: What is the scaling factor from B5 to B4?
A: Each side is scaled by โ2 โ 1.4142, meaning you enlarge the width and height by 41.4%.
Q: Can I fit a B5 document onto a B4 sheet?
A: Yes, by scaling it up to 141.4% on each dimension. The document will fit, with more white space around it.
Q: What is the difference in area between B5 and B4?
A: B4 has exactly double the area of B5 (0.088 mยฒ vs. 0.044 mยฒ).
Q: Is B5 bigger than B4?
A: No, B4 is larger. B4 is the next size up from B5. 1 B4 = 2 ร B5.
Q: What is B5 used for?
A: B5 is used for notebooks, textbooks, diaries, planners, and professional publications.
Q: What is B4 used for?
A: B4 is used for magazines, large books, catalogs, and professional publications.
Q: How does Bโseries compare to Aโseries?
A: B-series sizes are about 1.2ร larger than A-series at the same number. For example, B5 is between A5 and A4 in size.
Q: Can I print B5 on B4?
A: Yes, by scaling up to 141.4%. Most printers support this scaling. This tool helps you understand the exact ratio.
๐ Why Accurate B5โtoโB4 Conversion Matters
Accurate scaling between B5 and B4 is essential for book production, notebook design, and professional printing. Whether you're preparing a textbook, designing a notebook, or planning a publication, this tool ensures your documents fit perfectly every time. Inaccurate scaling can lead to wasted paper, misaligned designs, and costly reprints.
๐ Global Standards & Professional Usage
The Bโseries (ISO 216) is used alongside the Aโseries in many countries. B-series sizes are particularly popular in book publishing, notebook production, and professional design. This tool supports professional paper size conversions for users worldwide.
๐ The Full BโSeries Hierarchy
- B8 = 62 ร 88 mm โ small notepads, tags
- B7 = 88 ร 125 mm โ pocket notebooks, passports
- B6 = 125 ร 176 mm โ small books, notepads
- B5 = 176 ร 250 mm โ medium books, notebooks, textbooks
- B4 = 250 ร 353 mm โ magazines, large books
- B3 = 353 ร 500 mm โ posters, book signatures
- B2 = 500 ร 707 mm โ large posters, book covers
- B1 = 707 ร 1000 mm โ large posters, banners
- B0 = 1000 ร 1414 mm โ display boards, billboards
Each step up doubles the area, making the system intuitive and easy to scale.
๐ Explore More Paper & Print Tools
Check out our other converters: B4 to B3, B3 to B2, B2 to B1, B1 to B0, A4 to A3, A3 to A4, Letter to A4, PX to MM, and DPI Calculator. All designed to make your print and design workflows smoother.