๐ A4 Paper
| Millimeters | 210 ร 297 mm |
| Centimeters | 21.0 ร 29.7 cm |
| Inches | 8.27 ร 11.69 in |
| Points | 595 ร 842 pt |
| Picas | 49.6 ร 70.2 pc |
| Pixels (300dpi) | 2480 ร 3508 px |
| Pixels (72ppi) | 595 ร 842 px |
๐ A5 Paper
| Millimeters | 148 ร 210 mm |
| Centimeters | 14.8 ร 21.0 cm |
| Inches | 5.83 ร 8.27 in |
| Points | 420 ร 595 pt |
| Picas | 35.0 ร 49.6 pc |
| Pixels (300dpi) | 1748 ร 2480 px |
| Pixels (72ppi) | 420 ร 595 px |
Area: 1 A4 = 2 ร A5 (A5 is half the area). Scaling factor: 1/โ2 โ 0.7071 per side.
A5 is the go-to size for flyers, brochures, and notebooks โ this tool helps you scale down from A4 for professional printing and document planning.
A5 = A4 ร 2 ยท Scale factor = 1/โ2 โ 0.7071 per side1 A4 sheet splits into exactly 2 A5 sheets (or 1 A5 = 0.5 A4).
๐ What is A4 Paper Size?
A4 is the most common paper size worldwide, used in offices, schools, and homes. Its dimensions are 210 ร 297 mm (8.3 ร 11.7 inches), with an area of 0.0625 mยฒ. A4 is the standard for letters, forms, reports, and everyday printing. It's the foundation of the ISO 216 A-series and the reference size for all other A-series paper sizes. A4 is exactly double the area of A5, making it the most widely used paper size globally.
๐ What is A5 Paper Size?
A5 is a small paper size in the ISO 216 A-series. Its dimensions are 148 ร 210 mm (5.8 ร 8.3 inches), with an area of 0.03125 mยฒ โ exactly half the area of A4. A5 is commonly used for flyers, brochures, booklets, pocket-sized notebooks, and diaries. It's also popular for small-format publications, invitations, and compact stationery. A5 is the go-to size for portable documents and small-format printing.
๐งฎ The Math: How A4 Becomes A5
The ISO 216 series is based on the aspect ratio of โ2:1. Each step down (A4 โ A5) halves the area. The side lengths decrease by a factor of 1/โ2 โ 0.7071.
- Width: 210 mm ร (1/โ2) โ 148 mm
- Height: 297 mm ร (1/โ2) โ 210 mm
- Area: 0.0625 mยฒ รท 2 = 0.03125 mยฒ
Formula: 1 A4 = 2 ร A5 (in area). So, if you have 1 A4 sheet, you can create 2 A5 sheets from it (or 1 A5 = 0.5 A4).
๐ Quick Conversion Table: A4 to A5
| A4 Sheets | A5 Equivalent | Scale factor (side) | Realโworld use |
|---|---|---|---|
| 0.5 A4 | 1 A5 | 100% | Single flyer, brochure |
| 1 A4 | 2 A5 | 70.7% (reduce) | Two flyers, booklet pages |
| 2 A4 | 4 A5 | 50% (half width/height) | Four-page leaflet |
| 4 A4 | 8 A5 | 35.4% | Small booklet |
| 5 A4 | 10 A5 | 31.6% | Booklet chapter |
| 10 A4 | 20 A5 | 22.4% | Pocket notebook |
| 25 A4 | 50 A5 | 14.1% | Small publication |
| 50 A4 | 100 A5 | 10% | Booklet series |
๐จ๏ธ RealโWorld Examples: A4 to A5 in Action
- ๐ Office Printing: A4 is the standard office size. When you need to create A5 flyers or handouts from A4 documents, this converter tells you exactly how many A5 pages you can produce.
- ๐ Booklet Making: A4 sheets folded in half create A5 booklets. This is a common technique in publishing, DIY printing, and small-scale book production.
- ๐ฌ Marketing Materials: A4 flyers can be designed, and then the same artwork can be scaled to A5 for smaller-format mailers or handouts.
- ๐จ Art & Photography: A4 is used for standard prints. A5 offers a smaller, more portable format for portfolios and small art pieces.
- ๐ Stationery: A4 is used for letterheads. A5 is used for notepads, memo pads, and compact stationery sets.
๐ก Professional Tips for A4 to A5 Scaling
๐ฏ Resolution & Quality
When scaling from A4 to A5, if your original is 300 DPI, the resulting A5 will be ~424 DPI โ actually higher quality! This is because you're concentrating the same pixels into a smaller area. For best results, design at 300 DPI at A4 for sharp A5 prints.
๐ Vector vs. Raster
Vector graphics (logos, text) scale perfectly. Raster images (photos) require highโresolution source files to avoid pixelation when enlarged back up. Design at A4 with high resolution for best results across both sizes.
๐ฐ Cost Planning
Printing 2 A5 pages from 1 A4 sheet can save paper and costs. This is especially useful for large print runs of flyers, brochures, and booklets.
๐จ๏ธ Printer Compatibility
Most standard office printers support A4 and A5. Always check your printer's settings for scaling options when printing A5 from A4 documents.
โ Frequently Asked Questions (A4 to A5)
Q: How many A5 sheets equal 1 A4?
A: Exactly 2 A5 sheets make 1 A4 in terms of area. You can fit two A5 pages on one A4 sheet.
Q: What is the scaling factor from A4 to A5?
A: Each side is scaled by 1/โ2 โ 0.7071, meaning you reduce the width and height by 29.3%.
Q: Can I fit an A4 document onto an A5 sheet?
A: Yes, by scaling it down to 70.7% on each dimension. The document will fit, but text will be smaller.
Q: What is the difference in area between A4 and A5?
A: A4 has exactly double the area of A5 (0.0625 mยฒ vs. 0.03125 mยฒ).
Q: Is A4 bigger than A5?
A: Yes, A4 is larger. A4 is the next size up from A5. 1 A4 = 2 ร A5.
Q: What is A4 used for?
A: A4 is used for letters, reports, forms, and everyday office printing โ it's the most common paper size globally.
Q: What is A5 used for?
A: A5 is used for flyers, brochures, booklets, notebooks, and small-format publications.
Q: Can I print A4 on A5?
A: Yes, by scaling down to 70.7%. Most printers support scaling. This tool helps you understand the exact ratio.
๐ Why Accurate A4โtoโA5 Conversion Matters
Accurate scaling between A4 and A5 is essential for document management, printing efficiency, and professional presentation. Whether you're preparing a report, designing a brochure, or planning a booklet, this tool ensures your documents fit perfectly every time. Inaccurate scaling can lead to wasted paper, misaligned designs, and costly reprints.
๐ Global Standards & Localized Support
The Aโseries (ISO 216) is used in almost every country except the US and Canada (which use Letter, Legal, etc.). A4 is the most widely used paper size internationally, making this converter essential for global document management. This tool supports professional paper size conversions for users worldwide.
๐ The Full AโSeries Hierarchy
- A4 = 210 ร 297 mm (1/16 mยฒ) โ standard office paper
- A5 = 148 ร 210 mm (1/32 mยฒ) โ flyers, brochures, notebooks
- A6 = 105 ร 148 mm (1/64 mยฒ) โ notecards, postcards
- A7 = 74 ร 105 mm (1/128 mยฒ) โ small notepads, tags
- A8 = 52 ร 74 mm (1/256 mยฒ) โ very small notepads
Each step down halves the area, making the system intuitive and easy to scale.
๐ Explore More Paper & Print Tools
Check out our other converters: A4 to A3, A3 to A4, A3 to A2, A2 to A1, A1 to A0, Letter to A4, Legal to A4, PX to MM, and DPI Calculator. All designed to make your print and design workflows smoother.