A4 Paper Size in Pixels, MM, CM, and Inches
Everything you need to know about standard A4 paper dimensions according to the international ISO 216 standard, including exact pixel conversions across different screen and print resolutions.
A4 Dimensions Cheat Sheet
Official ISO 216 standard
Metric document measurement
Imperial measurement
High-resolution print standard
A4 Pixel Dimensions by DPI (Resolution)
Digital images require specific pixel dimensions depending on whether you are displaying them on a screen or sending them to a professional printer:
| Resolution (DPI / PPI) | Width (Pixels) | Height (Pixels) | Total Pixels (Megapixels) | Typical Application |
|---|---|---|---|---|
| 300 DPI | 2,480 px | 3,508 px | 8.7 MP | Standard for high-quality photo and document printing |
| 600 DPI | 4,960 px | 7,016 px | 34.8 MP | Ultra-fine art photography, blueprints, high-end offset printing |
| 200 DPI | 1,654 px | 2,339 px | 3.9 MP | Newspaper print, quick drafts, fast office proofing |
| 150 DPI | 1,240 px | 1,754 px | 2.2 MP | Standard laser document printing & email PDF attachments |
| 96 DPI | 794 px | 1,123 px | 0.9 MP | Windows desktop standard display resolution |
| 72 DPI | 595 px | 842 px | 0.5 MP | Web browsers, digital previews, and legacy monitor display |
The ISO 216 'A' Series Family (A0 to A8)
All ISO 216 paper sizes share a unique mathematical aspect ratio of 1 : √2 (approximately 1 : 1.4142). This means when you fold an A3 sheet in half, you get an exact A4 sheet, and folding A4 gives A5, without ever altering the aspect ratio.
| Size | Millimeters | Inches | Pixels @ 300 DPI | Comparison to A4 |
|---|---|---|---|---|
| A0 | 841 × 1189 mm | 33.1 × 46.8 in | 9933 × 14043 px | 16 × A4 sheets |
| A1 | 594 × 841 mm | 23.4 × 33.1 in | 7016 × 9933 px | 8 × A4 sheets |
| A2 | 420 × 594 mm | 16.5 × 23.4 in | 4960 × 7016 px | 4 × A4 sheets |
| A3 | 297 × 420 mm | 11.7 × 16.5 in | 3508 × 4960 px | 2 × A4 sheets |
| A4 | 210 × 297 mm | 8.27 × 11.69 in | 2480 × 3508 px | Standard Base Size |
| A5 | 148 × 210 mm | 5.8 × 8.3 in | 1748 × 2480 px | 1/2 of A4 |
| A6 | 105 × 148 mm | 4.1 × 5.8 in | 1240 × 1748 px | 1/4 of A4 (Postcard) |
A4 vs US Letter vs US Legal
A4 (International)
- • Size: 210 × 297 mm (8.27 × 11.69 in)
- • Pixels @ 300 DPI: 2480 × 3508 px
- • Used across: Europe, Asia, Latin America, Australia, Africa
US Letter (North America)
- • Size: 215.9 × 279.4 mm (8.5 × 11.0 in)
- • Pixels @ 300 DPI: 2550 × 3300 px
- • Slightly wider (6mm) and shorter (18mm) than A4
US Legal (Contracts)
- • Size: 215.9 × 355.6 mm (8.5 × 14.0 in)
- • Pixels @ 300 DPI: 2550 × 4200 px
- • Taller format for contracts, loan agreements, deeds
A4 & Paper Size Dimension Calculator
Quickly look up exact dimensions for standard paper formats in millimeters, centimeters, inches, and pixel counts at various print and screen DPIs.
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💡 Recommended Print Standard:
Always use 300 DPI for crystal-clear photo and document printing without pixelation or graininess.