Image & Print Size
Banner & Poster Resolution Calculator
Convert banner size and DPI into pixel canvas dimensions and megapixels.
How it works
Pixels = inches × DPI for each side.Megapixels = (W×H pixels) ÷ 1,000,000.
Worked example
48 × 24 in at 100 DPI → 4800 × 2400 px (11.5 MP).DPI by viewing distance
| Use | Typical DPI |
|---|---|
| Hand-held poster | 150–300 |
| Trade-show banner | 72–150 |
| Billboard / far | 30–72 |
Frequently asked questions
Should I always use 300 DPI for banners?
Usually no — file size explodes. Match DPI to viewing distance and printer RIP advice.
Why is banner DPI lower than shirt DPI?
Viewing distance. A roadside banner does not need shirt-level detail.
What if the client zooms a photo of the banner?
Close-up photos can look soft even when the install looks fine at distance — set expectations.
Should I still use bleed?
Yes — finishing and pocket hems still need margin beyond the live area.
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Last updated Oct 7, 2026