Formula: Width px = 707 × (DPI ÷ 25.4) • Height px = 1000 × (DPI ÷ 25.4)
Note: B1 is half of B0 and approximately equivalent to A0 in area (but different proportions).
B1 Paper Size in Pixels — Complete Guide to B-Series Dimensions
Understanding the exact pixel dimensions of B1 paper is essential for designers, printers, and professionals working with large-format printing. B1 is a versatile size that bridges the gap between standard poster sizes and large-scale displays. This comprehensive guide covers everything you need to know about B1 size in pixels.
📐 What is B1 Paper Size?
B1 is a standard paper size defined by the ISO 216 international standard for B-series paper. It measures 707 × 1000 mm (27.83 × 39.37 inches). B1 is commonly used for:
- Large posters and displays — Advertising, promotional materials, and exhibition stands
- Architectural drawings — Detailed plans and blueprints for construction
- Art prints and photography — Gallery-quality prints and fine art reproductions
- Wall calendars — Large-format calendars and planners
- Maps and charts — Detailed geographic and technical visualizations
The B1 size is part of the B-series paper sizes, where each size is half the previous one. B1 is half of B0 and twice the size of B2. The B-series was designed to provide sizes between A-series sizes, with B1 being approximately the geometric mean between A0 and A1.
📊 B1 vs A-Series Comparison
B1 vs A0: B1 (707 × 1000 mm) is slightly smaller than A0 (841 × 1189 mm). B1 is approximately the geometric mean between A0 and A1, making it an ideal size for applications that need a size between these two standards.
B1 vs A1: B1 (707 × 1000 mm) is larger than A1 (594 × 841 mm). B1 is commonly used when A1 is too small but A0 is too large.
📊 B1 Size in Pixels at Common Resolutions
The pixel dimensions of B1 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 | 2,004 | 2,835 | 5.7 MP | Web display / Screen |
| 96 DPI | 2,672 | 3,780 | 10.1 MP | Standard screen |
| 150 DPI | 4,173 | 5,906 | 24.6 MP | Large posters (viewed from distance) |
| 200 DPI | 5,567 | 7,874 | 43.8 MP | Good print quality |
| 250 DPI | 6,957 | 9,843 | 68.5 MP | High-quality print |
| 300 DPI | 8,350 | 11,811 | 98.6 MP | Professional print |
| 400 DPI | 11,134 | 15,748 | 175.3 MP | Premium print |
| 600 DPI | 16,700 | 23,622 | 394.5 MP | Professional photography |
| 1200 DPI | 33,400 | 47,244 | 1,578.0 MP | High-resolution scanning |
🧮 How to Calculate B1 Size in Pixels
The formula to convert B1 paper size (707 × 1000 mm) to pixels is simple:
🔢 Conversion Formula
Width in pixels: Width (px) = 707 × (DPI ÷ 25.4)
Height in pixels: Height (px) = 1000 × (DPI ÷ 25.4)
Total pixels (megapixels): MP = (Width × Height) ÷ 1,000,000
Example: At 150 DPI: Width = 707 × (150 ÷ 25.4) = 4,173 px | Height = 1000 × (150 ÷ 25.4) = 5,906 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 B1 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)
📊 B1 vs A-Series
A0: 841 × 1189 mm (33.1 × 46.8 in)
B1: 707 × 1000 mm (27.8 × 39.4 in)
A1: 594 × 841 mm (23.4 × 33.1 in)
B2: 500 × 707 mm (19.7 × 27.8 in)
A2: 420 × 594 mm (16.5 × 23.4 in)
B3: 353 × 500 mm (13.9 × 19.7 in)
A3: 297 × 420 mm (11.7 × 16.5 in)
🖨️ B1 Size for Printing — Resolution Recommendations
Choosing the right resolution for printing B1 depends on viewing distance and print quality requirements:
Posters & Displays (Viewing Distance: 1-3m)
Recommended: 150-200 DPI
At 150 DPI: 4,173 × 5,906 px
At 200 DPI: 5,567 × 7,874 px
Perfect for trade show displays, retail posters, and promotional materials.
Art Prints (Viewing Distance: 0.5-1.5m)
Recommended: 250-300 DPI
At 250 DPI: 6,957 × 9,843 px
At 300 DPI: 8,350 × 11,811 px
Ideal for gallery-quality prints and professional photography.
Digital Display / Web
Recommended: 72-96 DPI
At 72 DPI: 2,004 × 2,835 px
At 96 DPI: 2,672 × 3,780 px
Suitable for digital signage and presentations.
High-Resolution Scanning
Recommended: 600-1200 DPI
At 600 DPI: 16,700 × 23,622 px
At 1200 DPI: 33,400 × 47,244 px
Used for archival scanning and museum-quality reproductions.
📊 B1 Size in Different Units
🔄 How to Use This B1 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 B1 paper size.
❓ Frequently Asked Questions
A: At 150 DPI, B1 measures 4,173 × 5,906 pixels (24.6 megapixels). This is the recommended resolution for large posters viewed from a distance.
A: At 300 DPI, B1 measures 8,350 × 11,811 pixels (98.6 megapixels). This is the standard for professional quality printing.
A: For large posters viewed from a distance, use 150-200 DPI. For art prints, use 300 DPI for the best quality.
A: Yes, B1 (707 × 1000 mm) is larger than A1 (594 × 841 mm). B1 is approximately the geometric mean between A0 and A1.
A: B1 has an aspect ratio of 1:√2 (approximately 1:1.414). This is the standard aspect ratio for all B-series paper sizes.
A: B1 at 150 DPI is 4,173 × 5,906 = 24,645,738 pixels, or approximately 24.6 megapixels.
A: B1 paper size is 707 × 1000 millimeters, or 70.7 × 100.0 centimeters.
A: Yes, B1 (707 × 1000 mm) is one of the most popular poster sizes, commonly used for advertising, trade shows, and promotional displays.
📈 Common Misconceptions About B-Series Paper Sizes
- Misconception: "B1 has a fixed pixel size" — Fact: Pixel size depends entirely on DPI/PPI. B1 is always 707 × 1000 mm, but pixel dimensions vary with resolution.
- Misconception: "B1 is the same as A1" — Fact: B1 is larger than A1. B1 is 707 × 1000 mm, while A1 is 594 × 841 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 large-format prints viewed from a distance, 150 DPI is often sufficient.
📡 Pro Design Tip: B1 Print Preparation
When preparing files for B1 printing, follow these professional guidelines:
- Resolution: 150-200 DPI for posters (4,173 × 5,906 px) or 300 DPI for art prints
- Bleed: Add 5-10 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 large-format output
- Total File Size: At 300 DPI, file sizes can exceed 200 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. For example, B1 is the geometric mean of A0 and A1.
- Usage: B-series is commonly used for posters, books, and envelopes that need sizes between A sizes.
- International standard: ISO 216 defines both A and B series, with B0 being the largest commonly used size.
- Practical application: B1 is a versatile size that works well for many standard poster and display applications.
🔄 Common B1 Size Use Cases
- 📰 Posters: B1 is one of the most popular poster sizes for advertising and promotions.
- 🖼️ Art Prints: Photographers and artists often use B1 for gallery-quality prints.
- 📐 Architectural Drawings: B1 is a common size for construction plans and blueprints.
- 🏢 Trade Show Displays: B1 is commonly used for exhibition stands and presentation boards.
- 🗺️ Wall Maps: B1 is ideal for detailed wall maps and geographic visualizations.
- 📊 Presentations: B1 is often used for presentation boards and visual aids.
📈 Future of Large-Format Printing
As large-format printing technology continues to evolve, B1 remains a standard size:
- Digital Printing: B1 is now commonly printed on large-format digital printers
- Sustainable Materials: B1 is increasingly available in eco-friendly paper options
- Custom Printing: B1 continues to be a versatile size for personalized large-format products
- Augmented Reality: B1 printed markers are used in AR applications for tracking
- Interactive Displays: B1-sized digital displays are becoming more common
- Eco-Friendly Options: B1 is available in recycled and sustainable paper choices
🎓 Educational Resources and Further Reading
- Explore our complete suite of paper size converters
- B0 Size in Pixels
- B2 Size in Pixels
- Paper Size Converter
- DPI Calculator
- Read our blog for more design and printing tips
Last updated: January 2026. Our B1 size in pixels tool is regularly reviewed for accuracy and performance.