Formula: Width px = 125 × (DPI ÷ 25.4) • Height px = 176 × (DPI ÷ 25.4)
Note: B6 is larger than A6 (105 × 148 mm) and commonly used for booklets, envelopes, and pocket notebooks.
B6 Paper Size in Pixels — Complete Guide to B-Series Dimensions
Understanding the exact pixel dimensions of B6 paper is essential for designers, printers, and professionals working with small-format printing. B6 is a versatile B-series paper size, ideal for booklets, envelopes, pocket-sized notebooks, and compact printed materials. This comprehensive guide covers everything you need to know about B6 size in pixels.
📐 What is B6 Paper Size?
B6 is a standard paper size defined by the ISO 216 international standard for B-series paper. It measures 125 × 176 mm (4.92 × 6.93 inches). B6 is commonly used for:
- Booklets and pamphlets — Compact informational brochures and guides
- Envelopes — B6 envelopes are used for sending photos and small documents
- Pocket notebooks — Portable notebooks and journals
- Postcards — Small format postcards and greeting cards
- Catalog inserts — Product information sheets and promotional materials
The B6 size is part of the B-series paper sizes, where each size is half the previous one. B6 is half of B5 and twice the size of B7. The B-series was designed to provide sizes between A-series sizes.
📊 B-Series vs A-Series (Small Sizes)
B6 vs A6: B6 (125 × 176 mm) is larger than A6 (105 × 148 mm). B-series sizes are geometric means between A-series sizes, providing options between standard A sizes.
Key difference: B6 is approximately 1.19 times larger than A6 in each dimension, making it ideal for applications that need slightly more space than A6.
📊 B6 Size in Pixels at Common Resolutions
The pixel dimensions of B6 depend entirely on the resolution (DPI/PPI). Here's a quick reference for common DPI values:
| Resolution (DPI) | Width (px) | Height (px) | Total Pixels | Use Case |
|---|---|---|---|---|
| 72 DPI | 354 | 499 | 0.18 MP | Web display / Screen |
| 96 DPI | 472 | 665 | 0.31 MP | Standard screen |
| 150 DPI | 738 | 1,040 | 0.77 MP | Low-quality print |
| 200 DPI | 984 | 1,386 | 1.36 MP | Basic print quality |
| 250 DPI | 1,230 | 1,732 | 2.13 MP | Good print quality |
| 300 DPI | 1,476 | 2,079 | 3.07 MP | Professional print |
| 350 DPI | 1,722 | 2,425 | 4.18 MP | High-quality print |
| 400 DPI | 1,969 | 2,772 | 5.46 MP | Premium print |
| 600 DPI | 2,953 | 4,157 | 12.28 MP | Professional photography |
| 1200 DPI | 5,906 | 8,315 | 49.10 MP | High-resolution scanning |
🧮 How to Calculate B6 Size in Pixels
The formula to convert B6 paper size (125 × 176 mm) to pixels is simple:
🔢 Conversion Formula
Width in pixels: Width (px) = 125 × (DPI ÷ 25.4)
Height in pixels: Height (px) = 176 × (DPI ÷ 25.4)
Total pixels (megapixels): MP = (Width × Height) ÷ 1,000,000
Example: At 300 DPI: Width = 125 × (300 ÷ 25.4) = 1,476 px | Height = 176 × (300 ÷ 25.4) = 2,079 px
The constant 25.4 is the number of millimeters in one inch, which converts mm to inches before multiplying by the DPI value.
📄 B-Series Paper Sizes Comparison
Understanding how B6 compares to other B-series sizes helps you choose the right format for your project:
📊 B-Series Sizes
B0: 1000 × 1414 mm (39.4 × 55.7 in)
B1: 707 × 1000 mm (27.8 × 39.4 in)
B2: 500 × 707 mm (19.7 × 27.8 in)
B3: 353 × 500 mm (13.9 × 19.7 in)
B4: 250 × 353 mm (9.8 × 13.9 in)
B5: 176 × 250 mm (6.9 × 9.8 in)
B6: 125 × 176 mm (4.9 × 6.9 in)
B7: 88 × 125 mm (3.5 × 4.9 in)
B8: 62 × 88 mm (2.4 × 3.5 in)
📊 A-Series vs B-Series (Small)
A5: 148 × 210 mm (5.8 × 8.3 in)
B5: 176 × 250 mm (6.9 × 9.8 in)
A6: 105 × 148 mm (4.1 × 5.8 in)
B6: 125 × 176 mm (4.9 × 6.9 in)
A7: 74 × 105 mm (2.9 × 4.1 in)
B7: 88 × 125 mm (3.5 × 4.9 in)
A8: 52 × 74 mm (2.0 × 2.9 in)
B8: 62 × 88 mm (2.4 × 3.5 in)
🖨️ B6 Size for Printing — Resolution Recommendations
Choosing the right resolution for printing B6 depends on viewing distance and print quality requirements:
Booklets & Pamphlets (Viewing Distance: 0.3-0.5m)
Recommended: 250-300 DPI
At 250 DPI: 1,230 × 1,732 px
At 300 DPI: 1,476 × 2,079 px
Perfect for professional booklets and informational guides.
Envelopes & Postcards
Recommended: 300 DPI
At 300 DPI: 1,476 × 2,079 px
Ideal for B6 envelopes and high-quality postcards.
Digital Display / Web
Recommended: 72-96 DPI
At 72 DPI: 354 × 499 px
At 96 DPI: 472 × 665 px
Suitable for digital previews and web use.
High-Resolution Scanning
Recommended: 600-1200 DPI
At 600 DPI: 2,953 × 4,157 px
At 1200 DPI: 5,906 × 8,315 px
Used for archival scanning and detailed reproduction.
📊 B6 Size in Different Units
🔄 How to Use This B6 Pixel Size Tool
- Enter the resolution in DPI (dots per inch) or PPI (pixels per inch) in the input field.
- Click "Calculate" or press Enter to get instant pixel dimensions.
- View all results: The tool shows width, height, total megapixels, and the paper size.
- Use the reference table for quick lookups at common resolutions.
- Share our tool with fellow designers, printers, or anyone working with B6 paper size.
❓ Frequently Asked Questions
A: At 300 DPI, B6 measures 1,476 × 2,079 pixels (3.07 megapixels). This is the standard resolution for professional quality printing.
A: At 150 DPI, B6 measures 738 × 1,040 pixels (0.77 megapixels), suitable for basic printing and draft quality.
A: For professional print quality, use 300 DPI (1,476 × 2,079 px). For booklets and pamphlets, 250-300 DPI is recommended.
A: Yes, B6 (125 × 176 mm) is larger than A6 (105 × 148 mm). B6 is approximately 1.19 times larger in each dimension.
A: B6 has an aspect ratio of 1:√2 (approximately 1:1.414). This is the standard aspect ratio for all B-series paper sizes.
A: B6 at 300 DPI is 1,476 × 2,079 = 3,068,604 pixels, or approximately 3.07 megapixels.
A: B6 paper size is 125 × 176 millimeters, or 12.5 × 17.6 centimeters.
A: Yes, B6 is a common envelope size used for sending photos, small documents, and greeting cards.
📈 Common Misconceptions About B-Series Paper Sizes
- Misconception: "B6 has a fixed pixel size" — Fact: Pixel size depends entirely on DPI/PPI. B6 is always 125 × 176 mm, but pixel dimensions vary with resolution.
- Misconception: "B6 is the same as A6" — Fact: B6 is larger than A6. B6 is 125 × 176 mm, while A6 is 105 × 148 mm.
- Misconception: "B-series is just larger A-series" — Fact: B-series sizes are geometric means between A-series sizes, creating a different scaling system.
- Misconception: "Higher DPI always means better quality" — Fact: For B6 booklets viewed at close range, 300 DPI is recommended, but 250 DPI may be sufficient.
📡 Pro Design Tip: B6 Print Preparation
When preparing files for B6 printing, follow these professional guidelines:
- Resolution: 300 DPI for high-quality prints (1,476 × 2,079 px)
- Bleed: Add 2-3 mm bleed around all edges
- Color Mode: CMYK for print, RGB for digital display
- File Format: PDF/X-1a or TIFF for best print quality
- Sharpening: Apply moderate sharpening for small-format print output
- Total File Size: At 300 DPI, file sizes are typically under 5 MB (uncompressed TIFF)
📊 Understanding B-Series Paper Sizes
The B-series paper sizes are designed to provide intermediate sizes between A-series sizes:
- Origins: The B-series was developed to complement the A-series, providing sizes that are geometric means between A sizes.
- Mathematical basis: Each B size is the geometric mean of the adjacent A sizes.
- Usage: B-series is commonly used for booklets, envelopes, and compact printed materials.
- International standard: ISO 216 defines both A and B series, with B6 being a popular small format.
🔄 Common B6 Size Use Cases
- 📘 Booklets: B6 is perfect for compact informational booklets and guides.
- ✉️ Envelopes: B6 is a common envelope size for photos and documents.
- 📓 Notebooks: B6 is ideal for pocket-sized notebooks and journals.
- 📬 Postcards: B6 is commonly used for postcards and greeting cards.
- 📋 Catalog Inserts: B6 is used for product information sheets and promotional materials.
- 🎴 Trading Cards: B6 is similar to standard trading card sizes.
📈 Future of Small-Format Printing
As printing technology continues to evolve, B6 remains a popular size:
- Digital Printing: B6 is commonly printed on digital presses
- Sustainable Materials: B6 is available in eco-friendly paper options
- Custom Printing: B6 continues to be a versatile size for personalized small-format products
- Augmented Reality: B6 printed markers are used in AR applications
- Interactive Displays: B6-sized digital displays are becoming more common
🎓 Educational Resources and Further Reading
- Explore our complete suite of paper size converters
- B5 Size in Pixels
- B4 Size in Pixels
- Paper Size Converter
- DPI Calculator
- Read our blog for more design and printing tips
Last updated: January 2026. Our B6 size in pixels tool is regularly reviewed for accuracy and performance.