Recognised as Paper size
C4
- 229 × 324 mm
- ISO C
C4 measures 229 × 324 mm, or 9.02 × 12.76 inches. Its aspect ratio is 1.4148:1, close to √2, the property that makes each ISO size two of the next one down.
Dimensions
Millimetres229 × 324 mm
Centimetres22.9 × 32.4 cm
Inches9.016 × 12.756 in
Points (72 dpi)649.1 × 918.4 ptthe PostScript/PDF unit
Area0.0742 m²74,196 mm²
Aspect ratio1.41485:1√2 is 1.41421
At common print resolutions
72 dpi649 × 918screen preview
150 dpi1352 × 1913draft print
300 dpi2705 × 3827standard print quality
600 dpi5409 × 7654high quality print
The ISO 216 series
SeriesISO C
Halving ruleCut the long side in half to get the next size downthe √2 ratio is what makes this preserve the shape
Sheets of A4 in this sizeNot applicable
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Also reads as
PaPErC4 (chemical formula)
- Formula
- 477.318 g/mol
- 7 atoms
PaPErC4 has a molar mass of 477.318 g/mol, made up of 7 atoms across 4 elements: 1 × Pa, 1 × P, 1 × Er, 4 × C.
Molar mass
Molar mass477.318 g/mol
Total atoms per molecule7
Distinct elements4
Mass of one molecule7.9260519 × 10^-22 g
Molecules per gram1.2616622 × 10^21
Composition by mass
Pa48.4%
P6.5%
Er35%
C10.1%
Protactinium (Pa)231.04 g/mol, 48.404%
Phosphorus (P)30.974 g/mol, 6.489%
Erbium (Er)167.26 g/mol, 35.042%
Carbon (C × 4)48.044 g/mol, 10.065%
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