Envelope size · C series
C4 envelope size
A C4 envelope is 229 × 324mm (22.9 × 32.4cm, or 9.02 × 12.76 inches). It fits an A4 sheet flat, unfolded, and is used for contracts, certificates, reports and anything that should not be folded.
C4 envelope in every unit
| Millimetres | 229 × 324mm |
|---|---|
| Centimetres | 22.9 × 32.4cm |
| Inches | 9.02 × 12.76 inches |
| Fits | an A4 sheet flat, unfolded |
Portrait, width first. Landscape is the same two numbers the other way round.
Print that fits a C4 envelope
Proofed before it prints, delivered Australia-wide
Common questions
What size is a C4 envelope?
229 × 324mm, which is 22.9 × 32.4cm or 9.02 × 12.76 inches.
What fits in a C4 envelope?
An A4 sheet flat, unfolded. It is used for contracts, certificates, reports and anything that should not be folded.
What is the difference between C and DL envelopes?
C envelopes are sized to the A paper sizes: C4 takes A4 flat, C5 takes A5 flat or A4 folded once, C6 takes A6 or A4 folded twice. DL is the long envelope for A4 folded in thirds, and DLX is a slightly larger DL for letters with an insert.
Other envelope sizes
| Size | Millimetres | Inches |
|---|---|---|
| C3 envelope | 324 × 458 | 12.76 × 18.03 |
| C4 envelope | 229 × 324 | 9.02 × 12.76 |
| C5 envelope | 162 × 229 | 6.38 × 9.02 |
| C6 envelope | 114 × 162 | 4.49 × 6.38 |
| DL envelope | 110 × 220 | 4.33 × 8.66 |
| DLX envelope | 120 × 235 | 4.72 × 9.25 |
| 11B envelope | 90 × 145 | 3.54 × 5.71 |
| B4 envelope | 250 × 353 | 9.84 × 13.90 |
Every size we print, with a calculator for any other: print sizes in Australia.
Page updated .