DPI: 10 dpi billboard

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)
768 inch x 432 inch = 331776 inch2aspect ratio: 1.778 (diagonal: 881.16 inch)
64 feet x 36 feet = 2304 feet2aspect ratio: 1.778 (diagonal: 73.43 feet)
21.33 yard x 12 yard = 255.96 yard2aspect ratio: 1.778 (diagonal: 24.47 yard)
19.51 m x 10.97 m = 214.02 m2aspect ratio: 1.778 (diagonal: 22.38 m)

Print Pixel Size

Dots-per-inch
Printer resolution = 10 dpi = 4 dots/cm
Printer pitch = 2540 µm / micrometer (size of 1 pixel)
Net dimensions (no bleed)
7680 px x 4320 px = 33.2 megapixels
= aspect ratio 1.778

Some examples

References