A4 vs US Letter
US Letter is 5.9 mm wider and 17.6 mm shorter than A4 (0.23 in and 0.69 in).
Measurements
| A4 | US Letter | |
|---|---|---|
| Width | 8.27 in21 cm | 8.5 in21.6 cm |
| Height | 11.69 in29.7 cm | 11 in27.9 cm |
What to know
When a document made for one size is printed on the other, most printers scale it to fit, which adds a margin on one side. For forms that must print at 100%, set the page size in your document to match the paper in the tray.
Questions people ask
Is A4 bigger than US Letter?
A4 is larger in area: 103% of US Letter.
Related sizes
Sources and method
- ISO 216:2007, A and B series paper sizes
- ANSI/ASME Y14.1, decimal inch drawing sheet sizes
- U.S. paper size conventions (Letter, Legal, Tabloid)
Imperial and metric values are converted with 1 in = 25.4 mm exactly and rounded only for display. Found a mistake? Report it and we will correct the page.