What size is a C4 envelope?
C4 measures 229 × 324 mm, or 9.02 × 12.76 inches.
C4 dimensions
Portrait
229 × 324 mm
- Millimetres
- 229 × 324 mm
- Centimetres
- 22.9 × 32.4 cm
- Inches
- 9.02 × 12.76 in
- Points
- 649 × 918 pt
- Picas
- 54.1 × 76.5 pc
- Pixels · 72 PPI
- 649 × 918 px at 72 PPI
- Pixels · 150 PPI
- 1352 × 1913 px at 150 PPI
- Pixels · 300 PPI
- 2705 × 3827 px at 300 PPI
How C4 fits
A C4 envelope is proportioned to contain an unfolded A4 sheet.
The diagram is illustrative; the written dimensions above are authoritative.
Common uses
- Mailing A4 documents
- Enclosures and presentation packs
Questions about C4
What is C4 in pixels at 300 DPI?
For image setup, C4 is 2705 × 3827 pixels at 300 PPI. DPI describes printer dots; PPI is the technically correct measure for an image file.
Which paper size fits a C4 envelope?
A C4 envelope holds an unfolded A4 sheet.
Can a C4 envelope be used landscape?
Yes. Rotate the envelope to 324 × 229 mm.
What is C4 commonly used for?
Common uses include mailing a4 documents and enclosures and presentation packs.