Master paper sizes, print dimensions, DPI, PPI, and pixel conversions. Free tools for A4, Letter, poster sizes, banners, and professional print resolution.
Everything you need to calculate paper sizes, print dimensions, and resolution.
210 × 297 mm
📄297 × 420 mm
📄148 × 210 mm
📄8.5 × 11 in
📄8.5 × 14 in
🖨️Dots per Inch
📱Pixels per Inch
🖼️Width × Height
🎨A0 to A4
🏷️Custom sizes
📎Check PDF dimensions
📊DPI & PPI
Complete reference for ISO and US paper size standards.
Compare dimensions across all major paper sizes in mm, cm, inches, and pixels.
| Paper Size | mm | cm | inches | Pixels (300 DPI) |
|---|---|---|---|---|
| A0 | 841 × 1189 | 84.1 × 118.9 | 33.1 × 46.8 | 9933 × 14043 |
| A1 | 594 × 841 | 59.4 × 84.1 | 23.4 × 33.1 | 7016 × 9933 |
| A2 | 420 × 594 | 42.0 × 59.4 | 16.5 × 23.4 | 4961 × 7016 |
| A3 | 297 × 420 | 29.7 × 42.0 | 11.7 × 16.5 | 3508 × 4961 |
| A4 | 210 × 297 | 21.0 × 29.7 | 8.3 × 11.7 | 2480 × 3508 |
| A5 | 148 × 210 | 14.8 × 21.0 | 5.8 × 8.3 | 1748 × 2480 |
| Letter | 216 × 279 | 21.6 × 27.9 | 8.5 × 11 | 2550 × 3300 |
| Legal | 216 × 356 | 21.6 × 35.6 | 8.5 × 14 | 2550 × 4200 |
| Tabloid | 279 × 432 | 27.9 × 43.2 | 11 × 17 | 3300 × 5100 |
| Ledger | 432 × 279 | 43.2 × 27.9 | 17 × 11 | 5100 × 3300 |
| Executive | 184 × 267 | 18.4 × 26.7 | 7.25 × 10.5 | 2175 × 3150 |
Convert between all A series paper sizes instantly.
Convert between all B series paper sizes for posters and large format printing.
Convert between all C series envelope sizes for professional mail.
Convert between US paper sizes like Letter, Legal, and Tabloid.
The most complete set of paper size and print dimension tools available online.
Industry-standard precision for all paper sizes and print dimensions.
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DPI, PPI, and resolution calculators for professional print production.
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Everything you need to know about paper sizes, DPI, PPI, and print resolution.
DPI (Dots Per Inch) measures print resolution. The higher the DPI, the sharper and more detailed the printed image. For high-quality prints, 300 DPI is the industry standard. Low DPI results in pixelated, blurry prints.
Learn more →PPI (Pixels Per Inch) measures screen resolution. It determines how many pixels fit in one inch of a digital display. Higher PPI means sharper images and text on screens, especially important for mobile devices and Retina displays.
Learn more →A4 (210 × 297 mm) is the international standard used in most countries. Letter (8.5 × 11 in) is the US standard. A4 is slightly narrower and longer than Letter, which affects document formatting when switching between standards.
Learn more →For professional printing, 300 DPI is recommended for photos and detailed graphics. For large format prints (posters, banners), 150-200 DPI is sufficient since they are viewed from a distance. Always check your printer's specifications.
Learn more →The ISO 216 standard defines A, B, and C series paper sizes. A series is for general printing, B series for posters and envelopes, C series for envelopes. US sizes (Letter, Legal, Tabloid) are defined by ANSI.
Learn more →300 DPI is ideal for most print jobs. For photos, 300-600 DPI produces gallery-quality results. For text documents, 150 DPI is acceptable. Always match DPI to the viewing distance — larger prints need lower DPI.
Learn more →Pixel dimensions = width × height in pixels. For a 300 DPI A4 print: 2480 × 3508 pixels. Pixel dimensions depend on both physical size and resolution (DPI/PPI).
Learn more →For print, resolution is determined by DPI and physical size. A 300 DPI image that is 4 × 6 inches needs 1200 × 1800 pixels. Always check required DPI for your printing service.
Learn more →Answers to the most common questions about paper sizes, printing, and resolution.
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