Envelope Size Calculator
Standard envelope sizes and dimensions in inches for letters, invitations, and business mail.
Envelope Size Calculator
#10 Business
Width
9.5"
Height
4.125"
Fits
Standard letter (folded in thirds)
All Envelope Sizes
| Name | Width | Height |
|---|---|---|
| #10 Business | 9.5" | 4.125" |
| A2 Invitation | 5.75" | 4.375" |
| A6 Invitation | 6.5" | 4.75" |
| A7 Invitation | 7.25" | 5.25" |
| A9 Invitation | 8.75" | 5.75" |
| 5×7 Photo | 7.25" | 5.25" |
| 6×9 Catalog | 9" | 6" |
| 9×12 Catalog | 12" | 9" |
| #9 Reply | 8.875" | 3.875" |