C10
Dimensions: 28 × 40 mm (1.1 × 1.57 in)
C10 measures 28 × 40 mm (1.10 × 1.57 in) and belongs to the C Envelope Paper Sizes standard. It is commonly used for mailing a10 documents, folded if needed.
What size is C10 paper?
An C10 piece of paper measures 28 × 40 mm or 1.10 × 1.57 inches. It is part of the C Envelope Paper Sizes standard.
| Units | Width × Height |
|---|---|
| Metric millimeters (mm) | 28 × 40 mm |
| Metric centimeters (cm) | 2.80 × 4.00 cm |
| Metric meters (m) | 0.028 × 0.040 m |
| Imperial inches (in) | 1.10 × 1.57 in |
| Typographic points (1/72 inch) (pt) | 79.37 × 113.39 pt |
| Typographic picas (1/6 inch) (pc) | 6.61 × 9.45 pc |
| Pixels at 300 DPI (px) | 331 × 472 px |
C10 is part of the c envelope paper sizes standard. The C series envelope sizes are defined in ISO 269. C envelopes are designed to hold A series paper: a C4 envelope holds an A4 sheet, a C5 holds A5 or a folded A4, etc.
Quick facts
- Size (mm)28 × 40 mm
- Size (inches)1.10 × 1.57 in
- Aspect ratio1 : 1.43
- StandardC Envelope Paper Sizes
- Common useDocuments, letters, forms
Compare C10 with other sizes
Typical uses for C10
C10 measures 28 × 40 mm (1.10 × 1.57 in) and is used for the following tasks.
- Mailing A10 documents, folded if needed
- Statements, invoices and letters
- Cards and invitations
- Direct-mail inserts
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.
C10 at common DPI
Pixel dimensions for C10 at popular resolutions. Rounded to whole pixels; physical sheet remains 28 × 40 mm.
| DPI | Width (px) | Height (px) |
|---|---|---|
| 72 | 79 | 113 |
| 96 | 106 | 151 |
| 150 | 165 | 236 |
| 300 | 331 | 472 |
| 600 | 661 | 945 |
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28 × 40 mm (1.1 × 1.57 in)