DPI calculator: UK Billboard 1 sheet

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)
508 mm x 762 mm = 387096 mm2 (diagonal: 915.81 mm)
50.8 cm x 76.2 cm = 3870.96 cm2 (diagonal: 91.58 cm)
20 inch x 30 inch = 600 inch2 (diagonal: 36.06 inch)
1.67 feet x 2.5 feet = 4.18 feet2 (diagonal: 3.01 feet)
Brut dimensions (with bleed)
558.8 mm x 812.8 mm = 454192.64 mm2 (diagonal: 986.36 mm)
55.88 cm x 81.28 cm = 4541.93 cm2 (diagonal: 98.64 cm)
22 inch x 32 inch = 704 inch2 (diagonal: 38.83 inch)
1.83 feet x 2.66 feet = 4.87 feet2 (diagonal: 3.23 feet)

Print Pixel Size

Dots-per-inch
Printer resolution = 72 dpi = 28 dots/cm
Printer pitch = 353 µm / micrometer (size of 1 pixel)
Net dimensions (no bleed)
1440 px x 2160 px = 3.1 megapixels
= aspect ratio 0.667
Brut dimensions (with bleed)
1584 px x 2304 px = 3.6 megapixels

Some examples