C1 size
C1: 64.8 × 91.7 cm. In inches this is about 25.512 × 36.102 in.
C1
C-series envelopes · Paper sizes
64.8 × 91.7 cm
Standard size (W × H)
Centimetres (cm)
64.8 × 91.7 cm
Millimetres (mm)
648 × 917 mm
Inches (in)
25.512 × 36.102 in
Area
5,942.16 cm²
Aspect ratio
1 : 1.4151
Width / height
648 / 917
Pixel size at different DPI
| DPI | Width (px) | Height (px) | Total pixels | Typical use |
|---|---|---|---|---|
| 72 DPI | 1,837 | 2,599 | 4,774,363 (4.8MP) | Screen display |
| 96 DPI | 2,449 | 3,466 | 8,488,234 (8.5MP) | Windows default |
| 150 DPI | 3,827 | 5,415 | 20,723,205 (21MP) | Standard print |
| 200 DPI | 5,102 | 7,220 | 36,836,440 (37MP) | Good print |
| 300 DPI | 7,654 | 10,831 | 82,900,474 (83MP) | High-quality print |
| 600 DPI | 15,307 | 21,661 | 331,564,927 (332MP) | Professional print |
C1 measures 64.8 × 91.7 cm (648 × 917 mm) and belongs to the C-series envelopes group. It is typically used for Envelopes and Cards and invitations.
C1 — C1 size
C1: 64.8 × 91.7 cm (648 × 917 mm). C-series envelopes.
In inches this is about 25.512 × 36.102 in. The footprint area is about 5,942.16 cm².
300 DPI: 7,654 × 10,831 px.
Common uses
C1 · FAQ
How big is C1?
C1: 64.8 × 91.7 cm (648 × 917 mm).
What is the area of C1?
The footprint area is about 5,942.16 cm².
Where is C1 used?
Typical uses include Envelopes, Cards and invitations, Mailings.
Tip: leave a small tolerance when printing or installing; allow 3 mm bleed on each side for print artwork.