SizeKit reference

C4 Envelope Size

Find C4 Envelope size in mm, cm, inches, pixels, and common DPI values.

C4 Envelope size is 229 x 324 mm, or 9.02 x 12.76 in. At 300 DPI, C4 Envelope is 2705 x 3827 px.

Immediate answer

C4 Envelope at a glance

Use these defaults for quick design, print, or layout decisions.

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Millimeters 229 x 324 mm physical size
Inches 9.02 x 12.76 in rounded
Pixels at 300 DPI 2705 x 3827 px print-ready default

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Use C4 Envelope for

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C4 Envelope key dimensions

The same values in compact cards for scanning.

Millimeters
229 x 324
mm
Centimeters
22.9 x 32.4
cm
Inches
9.02 x 12.76 in
rounded
300 DPI
2705 x 3827 px
pixels

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More C Envelopes sizes

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C4 Envelope pixel table

Common DPI values for designers and print workflows. Use the bottom calculator bar for custom DPI or orientation.

DPIPortrait pixelsLandscape pixels
72 DPI649 x 918 px918 x 649 px
96 DPI866 x 1225 px1225 x 866 px
150 DPI1352 x 1913 px1913 x 1352 px
300 DPI2705 x 3827 px3827 x 2705 px
600 DPI5409 x 7654 px7654 x 5409 px

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Formula

SizeKit uses a transparent rounding rule.

pixels = round((millimeters / 25.4) x DPI). Inches = millimeters / 25.4.

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FAQ

Quick answers for this paper size.

What is C4 Envelope size in inches?

C4 Envelope is 9.02 x 12.76 in when rounded to two decimals.

What is C4 Envelope at 300 DPI?

C4 Envelope at 300 DPI is 2705 x 3827 px.

Can I switch to landscape?

Yes. Use the bottom calculator and choose landscape to swap width and height.

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Related sizes

Compare nearby sizes before choosing a layout.