What size is A4?
210 × 297 mm
That is 21 × 29.7 cm, or approximately 8.27 × 11.69 inches. These are portrait dimensions. Swap width and height for landscape.
A4 is half the nominal area of A3 and about twice that of A5. US Letter is wider and shorter, so check the paper setting when sharing documents between the two formats.
A4 size in pixels
Paper has physical dimensions; its pixel dimensions depend on the resolution you choose. The values below are rounded to the nearest whole pixel.
| Image resolution | Width × height |
|---|---|
| 72 PPI | 595 × 842 px |
| 150 PPI | 1240 × 1754 px |
| 300 PPI | 2480 × 3508 px |
| 600 PPI | 4961 × 7016 px |
A 300 PPI image covering an A4 page is approximately 2480 × 3508 pixels. This describes image resolution, not the printer’s dot resolution.
Already have an image? Check its physical print size at your chosen PPI.
Printing and scaling A4
To fit an A4 page on A3, use approximately 141.4%. To reduce it to A5, use approximately 70.5%. These percentages use the rounded nominal dimensions and assume no printer margins.
For a document that must retain its dimensions, select Actual size or 100% in your print dialogue, check the preview, then measure a test print. Read the actual-size printing guide.
Calculate a print scaleHow much does a sheet weigh?
At 80 gsm, one nominal A4 sheet weighs approximately 4.99 g. Paper GSM measures mass per square metre, so heavier stock changes the result without changing the page dimensions.
Calculate paper weight for your stock and number of sheets.