Paper sizes · Series guide
Envelope sizes
Envelope Sizes: compare 36 formats in the chart. Switch mm and inches. Check proportions and open the individual sheet-size details.
36 sizes in chartmm & inches
US A2 and A7 envelopes are greeting-card formats, separate from ISO A2 and A7 paper. The C series is designed around A series sheets.
ISO C (envelopes)
| Size | Dimensions |
|---|---|
| C0 | 917 × 1297 mm36.1024 × 51.063 in |
| C1 | 648 × 917 mm25.5118 × 36.1024 in |
| C2 | 458 × 648 mm18.0315 × 25.5118 in |
| C3 | 324 × 458 mm12.7559 × 18.0315 in |
| C4 | 229 × 324 mm9.0157 × 12.7559 in |
| C5 | 162 × 229 mm6.378 × 9.0157 in |
| C6 | 114 × 162 mm4.4882 × 6.378 in |
| C7 | 81 × 114 mm3.189 × 4.4882 in |
| C8 | 57 × 81 mm2.2441 × 3.189 in |
| C9 | 40 × 57 mm1.5748 × 2.2441 in |
| C10 | 28 × 40 mm1.1024 × 1.5748 in |
US envelopes
| Size | Dimensions |
|---|---|
| No. 6¾ (Personal) envelope | 92.075 × 165.1 mm3.625 × 6.5 in |
| No. 7¾ (Monarch) envelope | 98.425 × 190.5 mm3.875 × 7.5 in |
| No. 9 envelope | 98.425 × 225.425 mm3.875 × 8.875 in |
| No. 10 (Commercial) envelope | 104.775 × 241.3 mm4.125 × 9.5 in |
| No. 11 envelope | 114.3 × 263.525 mm4.5 × 10.375 in |
| No. 12 envelope | 120.65 × 279.4 mm4.75 × 11 in |
| No. 14 envelope | 127 × 292.1 mm5 × 11.5 in |
| A2 envelope | 111.125 × 146.05 mm4.375 × 5.75 in |
| A6 envelope | 120.65 × 165.1 mm4.75 × 6.5 in |
| A7 envelope | 133.35 × 184.15 mm5.25 × 7.25 in |
| A8 envelope | 139.7 × 206.375 mm5.5 × 8.125 in |
| A9 envelope | 146.05 × 222.25 mm5.75 × 8.75 in |
| A10 envelope | 152.4 × 241.3 mm6 × 9.5 in |
| 6x9 catalog envelopeCommon size; check your supplier. | 152.4 × 228.6 mm6 × 9 in |
| 9x12 catalog envelopeCommon size; check your supplier. | 228.6 × 304.8 mm9 × 12 in |
| 10x13 catalog envelopeCommon size; check your supplier. | 254 × 330.2 mm10 × 13 in |
ISO envelopes
| Size | Dimensions |
|---|---|
| DL envelope | 110 × 220 mm4.3307 × 8.6614 in |
| C4 envelope | 229 × 324 mm9.0157 × 12.7559 in |
| C5 envelope | 162 × 229 mm6.378 × 9.0157 in |
| C6 envelope | 114 × 162 mm4.4882 × 6.378 in |
| C6/C5 envelope | 114 × 229 mm4.4882 × 9.0157 in |
| C7 envelope | 81 × 114 mm3.189 × 4.4882 in |
| B4 envelope | 250 × 353 mm9.8425 × 13.8976 in |
| B5 envelope | 176 × 250 mm6.9291 × 9.8425 in |
| B6 envelope | 125 × 176 mm4.9213 × 6.9291 in |
Use your paper for origami
Start with thin, uncoated paper. The short edge sets the largest square you can cut. Fold a corner across and trim the spare strip, then try the beginner origami dog.