Render Print Size Calculator — Pixels to A0, A1, A2, A3
Will this render survive an A1 board? Find out before the print shop tells you.
Free · no sign-up · nothing uploaded — the maths runs in your browser.
150 DPI
650.2 × 365.8 mm
25.6 × 14.4 in
Fills A3 or smaller
Boards viewed from a metre or more
300 DPI
325.1 × 182.9 mm
12.8 × 7.2 in
Fills A5 or smaller
Held in the hand, read up close
| Paper | Size | Pixels @150 | Pixels @300 |
|---|---|---|---|
| A0 | 841 × 1189 mm | 4967 × 7022 | 9934 × 14044 |
| A1 | 594 × 841 mm | 3508 × 4967 | 7016 × 9934 |
| A2 | 420 × 594 mm | 2481 × 3508 | 4961 × 7016 |
| A3✓ yours fits | 297 × 420 mm | 1754 × 2481 | 3508 × 4961 |
| A4✓ yours fits | 210 × 297 mm | 1241 × 1754 | 2481 × 3508 |
| A5✓ yours fits | 148 × 210 mm | 875 × 1241 | 1749 × 2481 |
Your aspect ratio is 1.78:1. A0–A5 sheets are all 1:1.41, so anything wider than that leaves borders top and bottom — or loses the edges to a crop.
Why this matters
The question always arrives at the wrong time: the presentation board goes to print tomorrow and nobody is sure whether the render is big enough. Print it too small and it is fine; print it too large and the image turns soft in exactly the places a client looks first.
Enter your render's pixel dimensions and this tells you the largest size it prints cleanly, at both the 150 DPI that large-format boards get away with and the 300 DPI that close-viewed prints need. It also names the standard paper size you actually fill.
Two things worth knowing before you trust any number here. Viewing distance matters more than DPI — an A0 board seen from two metres is fine at 150 DPI, the same file at arm's length is not. And upscaling adds pixels but not detail, unless the upscaler is reconstructing rather than interpolating.
Worth knowing
- —150 DPI is the working minimum for boards viewed from a metre or more; 300 DPI for anything held in the hand
- —Large-format printers often output at 150 DPI regardless of what you send — check before exporting a 400 MB file
- —Aspect ratio matters as much as size: a 16:9 render never fills a portrait A1 without cropping or bordering
Frequently asked
What resolution do I need for an A1 print?+
A1 is 594 × 841 mm. At 150 DPI that needs roughly 3508 × 4967 pixels; at 300 DPI, 7016 × 9933. For a board viewed from a metre or more, 150 DPI is honest — you will not see the difference and the file stays manageable.
Is 300 DPI always necessary?+
No, and insisting on it wastes time and disk. 300 DPI is a print-industry standard for material held at reading distance. Architectural boards, site hoardings and exhibition panels are viewed from further away and 150 DPI holds up. Match the number to the viewing distance, not to habit.
Can I upscale a render to print bigger?+
Yes, and whether it helps depends on the method. Interpolation stretches the pixels you have and softens the result. AI upscaling reconstructs plausible detail and usually holds up in print. Archome includes a 4K upscale that is intended for exactly this case.
What size does Archome render at?+
Standard renders come back at a resolution suited to screen and small print. For board-sized output, run the result through the 4K upscale before sending to print — that is the step most people skip and then regret at the print shop.
Keep going
Archome AI turns a photo, sketch or CAD viewport into a photorealistic render in about 30 seconds. Every account gets 100 free credits to start with no card — start free or read the guide for architects.