C7 Envelope Size
C7 measures 81 × 114 mm (3.19 × 4.49 in). It is the ISO C envelope for an A7 card, sitting between A7 and B7, used for small cards and photo prints.
C7 measures 81 millimetres wide and 114 millimetres tall.
C7 Dimensions in Each Unit
C7 is 81 × 114 mm, which is 8.1 × 11.4 cm or 3.19 × 4.49 in. It is C6 cut in half.
| Unit | Width | Height | Width × height | Copy |
|---|---|---|---|---|
| Millimetres (mm) | 81 | 114 | 81 × 114 mm | |
| Centimetres (cm) | 8.1 | 11.4 | 8.1 × 11.4 cm | |
| Metres (m) | 0.081 | 0.114 | 0.081 × 0.114 m | |
| Inches (in) | 3.19 | 4.49 | 3.19 × 4.49 in | |
| Feet (ft) | 0.27 | 0.37 | 0.27 × 0.37 ft | |
| Points (pt) | 230 | 323 | 230 × 323 pt | |
| Picas (pc) | 19.1 | 26.9 | 19.1 × 26.9 pc | |
| Pixels at 72 DPI | 230 | 323 | 230 × 323 px | |
| Pixels at 150 DPI | 478 | 673 | 478 × 673 px | |
| Pixels at 300 DPI | 957 | 1346 | 957 × 1346 px | |
| Pixels at 600 DPI | 1913 | 2693 | 1913 × 2693 px |
Pixel counts follow from the resolution: pixels = millimetres ÷ 25.4 × DPI. More on the DPI and pixels page.
C7 Shape and Area
| Aspect ratio | 1 : 1.407 (√2) |
|---|---|
| Area | 0.00923 m² · 9,234 mm² |
| Diagonal | 139.8 mm · 5.51 in |
| ISO 216 tolerance | ± 1.5 mm each side |
| Governing standard | ISO 216:2007 |
C7 to Scale
C7 is half of C6 and folds in half to C8. Put C7 next to another size in the comparison tool.
Frequently Asked Questions
What size is a C7 envelope?
C7 is 81 by 114 mm, or 3.19 by 4.49 inches.
What fits in a C7 envelope?
An A7 card flat, or an A6 card folded once.
Which is bigger, C6 or C7?
C6 is the bigger of the two, at 114 × 162 mm against 81 × 114 mm for C7. It has twice the area, so two C7 envelopes cover one C6.
Envelope Sizes
✓ Dimensions per ISO 216:2007; unit values derived by formula. Reviewed . Editorial Process →