Paper Size Converter
See the exact size of A4, A3, A5, Letter, Legal and other paper in millimetres, centimetres, inches and pixels at any print resolution.
300 dpi for good print quality; 150 for drafts.
A4 in mm
210 × 297 mm
- In cm
- 21 × 29.7 cm
- In inches
- 8.27 × 11.69 in
- In pixels at 300 dpi
- 2,480 × 3,508 px
A4 paper is 210 × 297 mm (8.27 × 11.69 inches); at 300 dpi that's 2,480 × 3,508 pixels.
How it's worked out
- Pixels
8.268 in × 300 dpi2,480 px wide
Common paper sizes (mm)
| Size | Width | Height |
|---|---|---|
| A0 | 841 | 1,189 |
| A1 | 594 | 841 |
| A2 | 420 | 594 |
| A3 | 297 | 420 |
| A4 | 210 | 297 |
| A5 | 148 | 210 |
| A6 | 105 | 148 |
| B4 | 250 | 353 |
| B5 | 176 | 250 |
| US Letter | 215.9 | 279.4 |
| US Legal | 215.9 | 355.6 |
| Tabloid (Ledger) | 279.4 | 431.8 |
How it works
Pixels = size in inches × dots per inch
A sizes halve each step: A3 is two A4 sheets side by side, and A5 half of an A4.
Worked example
A4 is 210 × 297 mm = 8.27 × 11.69 inches, so at 300 dpi it's 2,480 × 3,508 pixels.
Questions people ask
What size is A4 paper?
210 × 297 mm, or 8.27 × 11.69 inches.
What is A4 in pixels?
2,480 × 3,508 pixels at 300 dpi, or 1,240 × 1,754 at 150 dpi.
How is A4 different from Letter?
US Letter is 215.9 × 279.4 mm: slightly wider and shorter than A4.
About this calculator
Formula and rules last checked 25 October 2026Written and tested by the CalculatorDex teamReport a problem