DPI: ISO A4 paper

Use this calculator to find out how many pixels (resolution) an image should have to be printed at a certain size.

Print Dimensions

Net dimensions (no bleed)
210 mm x 297 mm = 62370 mm2aspect ratio: 0.707 (diagonal: 363.74 mm)
21 cm x 29.7 cm = 623.7 cm2aspect ratio: 0.707 (diagonal: 36.37 cm)
8.27 inch x 11.69 inch = 96.68 inch2aspect ratio: 0.707 (diagonal: 14.32 inch)

Print Pixel Size

Dots-per-inch
Printer resolution = 300 dpi = 118 dots/cm
Printer pitch = 85 µm / micrometer (size of 1 pixel)
Net dimensions (no bleed)
2481 px x 3507 px = 8.7 megapixels
= aspect ratio 0.707

Some examples

References

  • Dots per inch
  • Bleed (printing)