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Standard A4 printing without a printer, a print shop, or the queue.
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A4 paper size,
answered
Common questions about A4 dimensions and printing.
01What size is A4 paper?
A4 measures 210 × 297 mm — 21 × 29.7 cm, or 8.27 × 11.69 inches. It is the standard document size in the UK and most of the world.
02Is A4 the same as US Letter?
No. US Letter is 8.5 × 11 inches (216 × 279 mm) — slightly wider and shorter than A4. Printing an American template on UK paper can clip text near the edges.
03What is A4 in pixels?
At 300 DPI (print quality), A4 is 2480 × 3508 pixels. At 72 DPI (screen resolution), it is 595 × 842 pixels.
04What paper weight is standard A4?
Standard office A4 is 80gsm. Heavier weights (100-120gsm) feel more substantial and suit CVs, certificates and client-facing documents.
05How do I print an A4 document without a printer?
Upload your PDF here, choose colour or black & white, and we print it at true A4 size and post it to any UK address.
A4 is the standard paper size in the UK and most of the world
The exact dimensions are 210 × 297 mm — that's 21 × 29.7 cm, or 8.27 × 11.69 inches. Here's everything that number affects, from Word documents to pixel dimensions for design work.
A4 dimensions at a glance
| Unit | A4 dimensions (width × height) |
|---|---|
| Millimetres | 210 × 297 mm |
| Centimetres | 21 × 29.7 cm |
| Inches | 8.27 × 11.69 in |
| Pixels at 300 DPI (print) | 2480 × 3508 px |
| Pixels at 72 DPI (screen) | 595 × 842 px |
Where A4 comes from
A4 is part of the international ISO 216 "A series", where every size is half the one above it: two A4 sheets make an A3, and half an A4 is an A5. The proportions (1:√2) stay identical at every size, which is why documents scale cleanly between sizes.
A4 vs US Letter
The US standard, Letter, is 8.5 × 11 inches (216 × 279 mm) — slightly wider and shorter than A4. This matters when you print an American template on UK paper: text near the edges can clip or shift. If a document looks wrong, check the page size in your export settings and set it to A4 before saving the PDF.
A4 in pixels for design work
For print-quality artwork, work at 300 DPI: an A4 canvas is 2480 × 3508 pixels. Anything much lower will look soft on paper — a common reason a design that looked sharp on screen prints blurry. For screen-only mockups, 595 × 842 px (72 DPI) matches A4 proportions.
Common A4 questions
Is A4 the same as "letter size" in the UK?
In the UK, "letter paper" colloquially means A4 — but if software offers a "Letter" page size, that's the US format. Always pick A4 explicitly.
What weight of A4 paper is normal?
Standard office A4 is 80gsm. Higher weights (100–120gsm) feel more substantial and suit CVs, certificates, and client-facing documents.
What fits in what envelope?
A4 folded in half fits a C5 envelope; folded in thirds it fits a DL envelope; flat A4 needs a C4 envelope.
Printing A4 documents without a printer
A4 is what we print all day at printle. Upload your PDF, choose black & white or colour, and we'll print and post it anywhere in the UK — same-day dispatch on working days before 2pm, free delivery on qualifying orders. See our A4 document printing page for full pricing.