US 信封尺寸
JIS A 和 B。
JB6
128 x 182
mm
mm
JB5
182 x 257
mm
mm
Kiku 4
227 x 306
mm
mm
JB4
257 x 364
mm
mm
Shiroku ban 4
264 x 379
mm
mm
JB3
364 x 515
mm
mm
JB2
515 x 728
mm
mm
JB1
728 x 1030
mm
mm
JB0
1030 x 1456
mm
mm
US 信封尺寸 — dimensions in mm and inches
| Format | mm | inches |
|---|---|---|
| JB6 | 128 × 182 | 5.04 × 7.17 |
| JB5 | 182 × 257 | 7.17 × 10.12 |
| Kiku 4 | 227 × 306 | 8.94 × 12.05 |
| JB4 | 257 × 364 | 10.12 × 14.33 |
| Shiroku ban 4 | 264 × 379 | 10.39 × 14.92 |
| JB3 | 364 × 515 | 14.33 × 20.28 |
| JB2 | 515 × 728 | 20.28 × 28.66 |
| JB1 | 728 × 1030 | 28.66 × 40.55 |
| JB0 | 1030 × 1456 | 40.55 × 57.32 |