Printer Paper Size

International Envelope Paper Sizes Dimensions

C5 International Envelope

C5 Paper Size

Dimensions: 162 × 229 mm (6.38 × 9.02 in)

162 × 229mm

6.38 × 9.02 in

C5 is a widely used paper size for C5 envelopes are commonly used for greeting cards, small catalogs, brochures, and unfolded A5 documents. It's part of the International Envelope Paper Sizes standard.

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International Envelope Paper SizesInternational Envelope Paper SizesWidely used

162 mm

229 mm

What size is C5 paper?

An C5 piece of paper measures 162 × 229 mm or 6.38 × 9.02 inches. It is part of the International Envelope Paper Sizes standard.

Units	Width × Height
Metric millimeters (mm)	162 × 229 mm
Metric centimeters (cm)	16.20 × 22.90 cm
Metric meters (m)	0.162 × 0.229 m
Imperial inches (in)	6.38 × 9.02 in
Typographic points (1/72 inch) (pt)	459.21 × 649.13 pt
Typographic picas (1/6 inch) (pc)	38.27 × 54.09 pc
Pixels at 300 DPI (px)	1,913 × 2,705 px

C5 is part of the international envelope paper sizes standard. International envelope sizes follow the ISO 269 standard. The DL envelope is the most commonly used internationally, designed to hold an A4 sheet folded in thirds.

Also called: C5 Envelope, ISO C5 Envelope.

Quick facts

Size (mm)162 × 229 mm
Size (inches)6.38 × 9.02 in
Aspect ratio1 : 1.41
StandardInternational Envelope Paper Sizes
Common useC5 envelopes are commonly used for greeting cards, small catalogs, brochures

Compare C5 with other sizes

Uses for C5

C5 envelopes are commonly used for greeting cards, small catalogs, brochures, and unfolded A5 documents.

International correspondence
Mailing documents without folding
Card and invitation mailings
Courier and records delivery

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.

What fits in C5?

An envelope must be slightly larger than its contents. Check the internal dimensions, not only the nominal size, and leave room for the fold and flap when inserting documents.

C5 at common DPI

Pixel dimensions for C5 at popular resolutions. Rounded to whole pixels; physical sheet remains 162 × 229 mm.

96 DPI

612 × 866 px

Standard web & screen resolution

150 DPI

957 × 1,352 px

Medium quality draft printing

300 DPI

1,913 × 2,705 px

High quality commercial print

C5 at 72, 96, 150, 300 and 600 DPI
DPI	Width (px)	Height (px)
72	459	649
96	612	866
150	957	1,352
300	1,913	2,705
600	3,827	5,409

Last reviewed: 14 September 2026

Frequently Asked Questions

What are the dimensions of C5?

C5 measures 162 × 229 mm (6.38 × 9.02 inches).

How many pixels is C5 at 300 DPI?

C5 is 1913 × 2705 pixels at 300 DPI. Changing DPI changes pixel count, not its 162 × 229 mm physical dimensions.