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C4 Specifications

Width (*) 229 mm
Height (*) 324 mm
Standard C Series (Envelope)
Half-Size A C5 envelope is half its size
Envelope

Can fit an A4 sheet of paper

(*) Subject to orientation

Click the diagram to see an animation representing the size relationship between C4 and C5 envelopes.

229mm

C4

C5

162mm (C5)
324mm (C4)

Compatible Printers

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Tools

DPI Calculator

Calculate the optimal DPI for printing on C4

Dimensions

UnitWidthHeight
Millimeters (mm)229324
Centimeters (cm)22.932.4
Meters (m)0.230.32
Inches (in)9.01612.756
Points (pt)649.13918.43
Picas (pc)54.0976.54
Pixels @ 72 DPI649918
Pixels @ 96 DPI8661225
Pixels @ 300 DPI27053827