#9
Dimensions: 8.86 × 3.86 in (225 × 98 mm)
#9 measures 225 × 98 mm (8.86 × 3.86 in) and belongs to the US Envelope Paper Sizes standard. It is commonly used for business correspondence and invoices.
What size is #9 paper?
An #9 piece of paper measures 225 × 98 mm or 8.86 × 3.86 inches. It is part of the US Envelope Paper Sizes standard.
| Units | Width × Height |
|---|---|
| Metric millimeters (mm) | 225 × 98 mm |
| Metric centimeters (cm) | 22.50 × 9.80 cm |
| Metric meters (m) | 0.225 × 0.098 m |
| Imperial inches (in) | 8.86 × 3.86 in |
| Typographic points (1/72 inch) (pt) | 637.80 × 277.80 pt |
| Typographic picas (1/6 inch) (pc) | 53.15 × 23.15 pc |
| Pixels at 300 DPI (px) | 2,657 × 1,157 px |
#9 is part of the us envelope paper sizes standard. US envelope sizes are commonly used in the United States for business and personal correspondence. The most common is the #10 envelope used for standard business letters.
Quick facts
- Size (mm)225 × 98 mm
- Size (inches)8.86 × 3.86 in
- Aspect ratio1 : 0.44
- StandardUS Envelope Paper Sizes
- Common useDocuments, letters, forms
Compare #9 with other sizes
Typical uses for #9
#9 measures 225 × 98 mm (8.86 × 3.86 in) and is used for the following tasks.
- Business correspondence and invoices
- Direct-mail campaigns
- Statements and remittance envelopes
- Greeting and invitation mailings
Printer tip
Load envelopes one at a time or in the dedicated envelope slot, set the flap side correctly, and choose the exact envelope size in the driver.
#9 at common DPI
Pixel dimensions for #9 at popular resolutions. Rounded to whole pixels; physical sheet remains 225 × 98 mm.
| DPI | Width (px) | Height (px) |
|---|---|---|
| 72 | 638 | 278 |
| 96 | 850 | 370 |
| 150 | 1,329 | 579 |
| 300 | 2,657 | 1,157 |
| 600 | 5,315 | 2,315 |
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8.86 × 3.86 in (225 × 98 mm)