Paper Sizes Chart
Find the exact size of any standard paper format in millimetres, inches and pixels. Start with A4 or Letter, use the paper size converter for any resolution, or search for a size below.
- Tools
- A series (ISO 216)
- North American sizes
- B series (ISO 216)
- C series (envelopes)
- Card & ID sizes (ISO/IEC 7810)
- ANSI engineering sizes
- Architectural sizes (ARCH)
- Guides
Tools
A series (ISO 216)
North American sizes
B series (ISO 216)
C series (envelopes)
- C0 Envelope Size917 × 1297 mm
- C1 Envelope Size648 × 917 mm
- C2 Envelope Size458 × 648 mm
- C3 Envelope Size324 × 458 mm
- C4 Envelope Size229 × 324 mm
- C5 Envelope Size162 × 229 mm
- C6 Envelope Size114 × 162 mm
- C7 Envelope Size81 × 114 mm
- C8 Envelope Size57 × 81 mm
- C9 Envelope Size40 × 57 mm
- C10 Envelope Size28 × 40 mm
- DL Envelope Size110 × 220 mm
Card & ID sizes (ISO/IEC 7810)
ANSI engineering sizes
Architectural sizes (ARCH)
Guides
- A4 vs Letter: What Is the Difference?Side-by-side comparison
- How ISO Paper Sizes Work (A, B and C)Why A4 is 210 × 297 mm
- How to Scale a Document Between Paper SizesFit-to-page percentages
- Paper Weight (gsm) ExplainedGrams per square metre
- How to Read Paper Size Names (A4, B5, C5, DL, ANSI)What the letters and numbers mean
- Print Margins, Bleed and Safe AreaPreparing a file for printing
Which paper size should I use?
Most of the world uses the ISO A series, and A4 is the standard for letters and documents. The United States and Canada use Letter. If you are not sure, read A4 vs Letter or how ISO paper sizes work.
For envelopes, the C series and the long DL envelope match the A sizes. For ID and bank cards, see ID-1, the credit card size.
| Size | Millimetres | Inches | Common use |
|---|---|---|---|
| A4 | 210 × 297 mm | 8.27 × 11.69 in | Documents and letters (most of the world) |
| Letter | 215.9 × 279.4 mm | 8.5 × 11 in | Documents and letters (US and Canada) |
| A3 | 297 × 420 mm | 11.69 × 16.54 in | Drawings, diagrams, small posters |
| A5 | 148 × 210 mm | 5.83 × 8.27 in | Notebooks, flyers, planners |
| Legal | 215.9 × 355.6 mm | 8.5 × 14 in | Legal documents and contracts |
How the sizes relate
ISO sizes all share one proportion (1 : √2), so scaling between A sizes is about 70.7% going down one size and about 141.4% going up one size. North American sizes do not share a proportion, so printing between them needs a different scale; the guide on scaling a document between paper sizes lists the exact percentages.