What Size Is Copy Paper? Quick Answer for Letter, A4 and Office Buyers
If you are asking “what size is copy paper,” the answer depends on your market. In the United States, standard copy paper is usually US Letter size, 8.5 x 11 inches. In most international markets, standard office copy paper is usually A4 size, 210 x 297 mm. These two sizes are close, but they are not identical.
This page is a quick reference for buyers who need a fast answer before ordering. For the full comparison of A4, Letter, Legal, Tabloid, A3 and A5, use our main Copy Paper Size Guide.
Quick Copy Paper Size Reference
| Common Name | 尺寸 | 最适合 |
|---|---|---|
| US Letter | 8.5 x 11 inches | Standard office documents in the United States and Canada |
| A4 | 210 x 297 毫米 | International office documents, schools, invoices and business printing |
| Legal | 8.5 x 14 inches | Contracts, legal files and official documents |
| 11×17 / Tabloid | 11 x 17 inches | Charts, posters, drawings and larger visual documents |
Is Standard Copy Paper A4 or Letter?
There is no single global answer. In North America, many people mean Letter size when they say “standard copy paper.” In Europe, Asia, Africa, the Middle East and many export markets, buyers usually mean A4. This is why B2B purchase orders should always state the exact size instead of only saying “standard paper.”
Why the Difference Matters for Procurement
A4 and Letter paper are similar enough to cause confusion but different enough to create printing problems. If the wrong size is loaded into a printer, documents may scale, margins may shift, and templates may not align. For schools, offices, government departments and distributors, that can lead to wasted stock and extra reprints.
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Buying Tip for Offices and Distributors
- 使用 信件 for North American office workflows.
- 使用 A4 for most international business, school and export markets.
- 使用 Legal only when contracts or legal forms require extra length.
- 使用 11×17 for visual-heavy documents, charts and print-shop work.
Related Resources
FAQ
What is the normal copy paper size in the US?
The normal copy paper size in the US is Letter size, 8.5 x 11 inches.
What is the normal copy paper size internationally?
The normal international office paper size is A4, 210 x 297 mm.
Can I use A4 instead of Letter?
Many printers can handle both sizes, but the tray setting and document setup should match the actual paper size to avoid scaling or margin problems.
Where should I compare all paper sizes?
Use the main Copy Paper Size Guide for a full table covering A4, Letter, Legal, Tabloid, A3 and A5.
Need Help Choosing the Right Size?
If you are buying copy paper for office use, school supply, distribution or wholesale orders, confirm the size, GSM, packaging and order quantity before purchasing. For bulk sourcing, contact us for a quote.
Planning Full Container (20GP) Copy Paper Import?
We manufacture and export high-brightness 70 / 75 / 80 GSM A4 copy paper directly to overseas paper importers, commercial stationery distributors, and procurement managers worldwide. Access factory-direct FOB / CIF container pricing with custom OEM brand packaging.
