C9 Paper Size
40 x 57 mm
What is C9?
A C9 sheet of paper measures 40 × 57 mm, which equals 1.57 × 2.24 inches or 472 × 673 pixels at 300 DPI.
C9 — All Units
| Units | Width × Height |
|---|---|
| Metric | |
| mm — Millimeter | 40 × 57 |
| cm — Centimeter | 4 × 5.7 |
| dm — Decimeter | 0.4 × 0.57 |
| m — Meter | 0.04 × 0.057 |
| km — Kilometer | 0.00004 × 0.000057 |
| µm — Micrometer | 40,000 × 57,000 |
| nm — Nanometer | 40,000,000 × 57,000,000 |
| Imperial | |
| in — Inch | 1.57 × 2.24 |
| ft — Foot | 0.131 × 0.187 |
| yd — Yard | 0.0437 × 0.0623 |
| mi — Mile | 0.000025 × 0.000035 |
| nmi — Nautical Mile | 0.000022 × 0.000031 |
| hand — Hand | 0.394 × 0.561 |
| bc — Barleycorn | 4.7244 × 6.7323 |
| Typography | |
| pt — Point (PostScript) | 113.4 × 161.6 |
| pc — Pica (PostScript) | 9.449 × 13.465 |
| twip — Twip | 2,267.72 × 3,231.5 |
| Didot pt — Point (Didot) | 106.391 × 151.607 |
| Didot pc — Pica (Didot) | 8.866 × 12.634 |
| cicero — Cicero | 8.866 × 12.634 |
| Digital / Pixel | |
| css px — CSS Pixel (96 PPI) | 151.2 × 215.4 |
| px@72 — Pixel @ 72 PPI | 113.4 × 161.6 |
| px@96 — Pixel @ 96 PPI | 151.2 × 215.4 |
| px@150 — Pixel @ 150 PPI | 236.2 × 336.6 |
| px@300 — Pixel @ 300 PPI (print) | 472.4 × 673.2 |
| px@600 — Pixel @ 600 PPI (high-res) | 944.9 × 1,346.5 |
| px@1200 — Pixel @ 1200 PPI (ultra) | 1,889.8 × 2,692.9 |
| Relative Typography | |
| em — Em (12pt base) | 9.449 × 13.465 |
| en — En (12pt base) | 18.898 × 26.929 |
| Area | 2280 mm² |
| Aspect ratio | 1 : 1.425 |
US Envelope Paper Sizes — View all →
Frequently Asked Questions
What is C9 in inches?
C9 = 1.57 × 2.24 in
What is C9 in millimeters?
C9 = 40 × 57 mm
What is C9 in centimeters?
C9 = 4 × 5.7 cm
What is C9 in pixels at 300 DPI?
C9 = 472 × 673 px @300 DPI