Print Size & DPI Calculator
Find how big an image prints at 150 or 300 DPI, and how many pixels A4, photo, card and banner sizes need. Free calculator for designers.
How big will my image print?
Print quality (DPI)
25.4 × 16.9 cm · 10.00 × 6.67 in · 6.0 MP
How many pixels do I need?
At
| Size | Physical | Pixels needed | Your image |
|---|---|---|---|
| A4 | 210 × 297 mm | 2,480 × 3,508 | ✕ too small |
| A3 | 297 × 420 mm | 3,508 × 4,961 | ✕ too small |
| A5 | 148 × 210 mm | 1,748 × 2,480 | ✓ enough |
| Letter | 8.5 × 11 in | 2,550 × 3,300 | ✕ too small |
| Legal | 8.5 × 14 in | 2,550 × 4,200 | ✕ too small |
| 4R photo (4×6 in) | 4 × 6 in | 1,200 × 1,800 | ✓ enough |
| Passport photo (BD 45×55 mm) | 45 × 55 mm | 531 × 650 | ✓ enough |
| Visiting card (3.5×2 in) | 3.5 × 2 in | 1,050 × 600 | ✓ enough |
| Banner 3×6 ft | 36 × 72 in | 10,800 × 21,600 | ✕ too small |
| Banner 4×8 ft | 48 × 96 in | 14,400 × 28,800 | ✕ too small |
| Poster 18×24 in | 18 × 24 in | 5,400 × 7,200 | ✕ too small |
Banners are viewed from a distance, so 100–150 DPI is usually fine. Photos and documents look best at 300 DPI.
Ad space · responsive
How to use Print Size & DPI Calculator
- Enter your image's width and height in pixels.
- Pick the print quality (DPI) to see the printed size.
- Check the table to see which paper and banner sizes your image is big enough for.
Privacy
Runs entirely in your browser. Nothing you enter or open here is uploaded.
Questions
What DPI should I use?
300 DPI for photos, cards and documents held in the hand; 100–150 DPI is enough for banners and posters seen from a distance.