Question
What's the difference between US Letter and A4 flyer sizes?
Answer
US Letter and A4 are the two most common flyer sizes, and they are close but not identical. US Letter measures 8.5" x 11" while A4 measures 8.27" x 11.7", so A4 is slightly narrower and noticeably taller. The gap is small, but it shifts margins, columns, and image placement, so you should design to the size you will actually print.
- US Letter (8.5" x 11"): the North American standard.
- A4 (8.27" x 11.7"): the international ISO standard used across most of the world.
- A4 is thinner and longer, which changes how a layout breathes.
- For international distribution, design to A4 so your flyer matches local paper, printers, and racks.
| Size | Dimensions | Where used |
|---|---|---|
| US Letter | 8.5" x 11" | US, Canada |
| A4 | 8.27" x 11.7" | Most other countries |
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