C Series Envelopes (ISO 216) Paper Sizes
C Series Envelopes (ISO 216) includes 10 standard sizes ranging from C0 (917 × 1297 mm) to C8 (57 × 81 mm). The C series is used for envelopes — a C-size envelope neatly holds the matching A-size sheet (a C4 envelope fits an A4 sheet unfolded).
The C series is used for envelopes — a C-size envelope neatly holds the matching A-size sheet (a C4 envelope fits an A4 sheet unfolded).
All C Series Envelopes (ISO 216) Sizes
- C0 — 917 × 1297 mm (36.1 × 51.06 in)
- C1 — 648 × 917 mm (25.51 × 36.1 in)
- C2 — 458 × 648 mm (18.03 × 25.51 in)
- C3 — 324 × 458 mm (12.76 × 18.03 in)
- C4 — 229 × 324 mm (9.02 × 12.76 in)
- C5 — 162 × 229 mm (6.38 × 9.02 in)
- C6 — 114 × 162 mm (4.49 × 6.38 in)
- C7 — 81 × 114 mm (3.19 × 4.49 in)
- DL — 110 × 220 mm (4.33 × 8.66 in)
- C8 — 57 × 81 mm (2.24 × 3.19 in)
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