Paper Size Reference
Quick reference for paper sizes including A series (A0–A6), B series (B0–B5), and US sizes (Letter, Legal, Tabloid). View dimensions in mm or inches.
| Size | Width (mm) | Height (mm) | Dimensions |
|---|---|---|---|
| A0 | 841 | 1189 | 841 x 1189 mm |
| A1 | 594 | 841 | 594 x 841 mm |
| A2 | 420 | 594 | 420 x 594 mm |
| A3 | 297 | 420 | 297 x 420 mm |
| A4 | 210 | 297 | 210 x 297 mm |
| A5 | 148 | 210 | 148 x 210 mm |
| A6 | 105 | 148 | 105 x 148 mm |
Common Comparisons
- A4 (210 x 297 mm) is close to US Letter (8.5 x 11 in / 215.9 x 279.4 mm)
- A3 (297 x 420 mm) is close to US Tabloid (11 x 17 in / 279.4 x 431.8 mm)
- Each A-series size is half the area of the previous: A3 = 2x A4
How It Works
This reference tool displays standard paper sizes from three common systems:
- A Series (ISO 216): The international standard from A0 (841 × 1189 mm) to A6 (105 × 148 mm). Each size is half the previous one. A4 is the most widely used.
- B Series (ISO 216): Slightly larger than the corresponding A sizes, B series papers are used for posters, books, and envelopes. B0 starts at 1000 × 1414 mm.
- US Sizes: North American standards including Letter (8.5 × 11 in), Legal (8.5 × 14 in), and Tabloid (11 × 17 in).
Toggle between millimeters and inches to view dimensions in your preferred unit. Use the search bar to quickly find a specific size.
Frequently Asked Questions
What size is A4 paper in inches?
A4 paper is 210 × 297 mm, which is approximately 8.27 × 11.69 inches. It is the most commonly used paper size worldwide and is slightly narrower and taller than US Letter size.
What is the difference between A4 and US Letter?
A4 (210 × 297 mm / 8.27 × 11.69 in) is slightly narrower and taller than US Letter (215.9 × 279.4 mm / 8.5 × 11 in). A4 is the international standard, while Letter is used primarily in the US and Canada.
How does the A-series paper sizing work?
The A-series is based on the ISO 216 standard. A0 has an area of 1 square meter. Each subsequent size (A1, A2, etc.) is exactly half the area of the previous size, created by cutting the longer side in half. All sizes maintain the same aspect ratio of 1:√2.
What is Tabloid size paper?
Tabloid paper is 11 × 17 inches (279.4 × 431.8 mm). It is twice the size of US Letter paper. Ledger is the same dimensions but oriented landscape (17 × 11 inches).