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A4 Paper Size in Inches: Dimensions & Conversion
A4 paper size in inches: 8.27 × 11.69 in. A4 measurements, mm to inches conversion. When to use A4.
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A4 paper size in inches is approximately 8.27 × 11.69 inches (210 × 297 mm). A4 is the standard paper size in most of the world under ISO 216.
A4 paper measurements
| Unit | Width | Height |
|---|---|---|
| Inches | 8.27 in | 11.69 in |
| Millimeters | 210 mm | 297 mm |
What are the measurements of A4 paper? 210 mm wide by 297 mm tall, or 8.27 × 11.69 inches. The aspect ratio is 1:√2, so folding an A4 sheet in half yields A5 with the same proportions.
A4 vs Letter (8.5 × 11)
| Size | Inches | Metric |
|---|---|---|
| A4 | 8.27 × 11.69 in | 210 × 297 mm |
| US Letter | 8.5 × 11 in | 216 × 279 mm |
A4 is slightly narrower and taller than Letter. For templates, use A4 when your paper is 210 × 297 mm; use Letter when it is 8.5 × 11 in.
When to use A4
- International use (Europe, Asia, many other regions)
- ISO 216 compatibility (A3, A4, A5 scaling)
- Printers and supplies set up for A4
Related
- A4 vs Letter: which to choose
- 8.5 × 11 Letter dimensions
- Paper size standards
- Printable A4 templates – graph paper, lined paper in A4