A3 Image Resolution & Print Size
A3 measures 11.69 × 16.54 inches (297 × 420 mm). Required resolution at 300 DPI is 3508 × 4960 pixels.
Drop your image here
or browse from your device
Calculate manually without an image
Enter pixel dimensions or physical inches/cm to calculate DPI and print sizes directly.
A3 Complete Dimensions & Resolution Blueprint
Double A4 format, common for architectural drawings, charts, and menus.
Required Pixels for A3 by DPI Quality Level
| Print Quality | DPI | Required Pixels (W × H) | Megapixels | Use Case Recommendation |
|---|---|---|---|---|
| Draft Screen Only | 72 DPI | 842 × 1,191 px | 1 MP | Web & draft display only (soft on paper) |
| Newspaper / Poster | 150 DPI | 1,754 × 2,481 px | 4.35 MP | Good for distance viewing (>3 ft / 1 meter) |
| Desktop Photo | 200 DPI | 2,338 × 3,308 px | 7.73 MP | Solid desktop / home laser printer quality |
| Commercial Print | 300 DPI | 3,507 × 4,962 px | 17.4 MP | Close inspection: Photo lab & fine press benchmark |
| Fine Art / Archival | 600 DPI | 7,014 × 9,924 px | 69.61 MP | Ultra-fine archival giclée & sharp vector text |
While 300 DPI (3,507 × 4,962 px) is the standard benchmark for close-up handheld viewing, it is not universally mandatory for every printing project. The appropriate resolution depends on four key factors:
Pixel Requirements for A3 Paper
At 300 DPI: 3508 × 4960 pixels (17.4 Megapixels).
At 150 DPI: 1754 × 2480 pixels (4.3 Megapixels). Since A3 is typically viewed from a step back, 150 to 200 DPI is often sufficient for illustrated art prints.
Calculate custom dimensions with our print size calculator or browse the 300 DPI image size chart.
Frequently Asked Questions
You need approximately 17.4 Megapixels (3508 × 4960 px) for maximum 300 DPI gallery prints, or 4.3 Megapixels for standard poster viewing.