Printing 1200 mm x 1800 mm @ 72 dpi

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

Input Parameters

Dimensions
1200 mm x 1800 mm
A/R: 0.67
aspect ratio
1800 mm x 1200 mm
A/R: 1.5
rotated 90°
Printer resolution
Imperial
72 dpi
dots per inch
Metric
28 dots/cm
dots/in ÷ 2.54 cm/in
Printer pitch (dot size)
353 µm
25400 mm/in ÷ dots/in

Print Dimensions

Net (without bleed)
120 cm x 180 cm
21600 cm2
diagonal: 216.33 cm
47.24 inch x 70.87 inch
3348 inch2
diagonal: 85.17 inch
3.94 feet x 5.91 feet
23.29 feet2
diagonal: 7.1 feet
1.31 yard x 1.97 yard
2.58 yard2
diagonal: 2.37 yard
1.2 m x 1.8 m
2.16 m2
diagonal: 2.16 m
Total dimensions (with bleed)
125.08 cm x 185.08 cm
23150 cm2
diagonal: 223.38 cm
49.24 inch x 72.87 inch
3588 inch2
diagonal: 87.95 inch
4.1 feet x 6.07 feet
24.89 feet2
diagonal: 7.32 feet
1.37 yard x 2.03 yard
2.78 yard2
diagonal: 2.45 yard
1.26 m x 1.86 m
2.34 m2
diagonal: 2.25 m

Print Pixel Size

Net dimensions (no bleed)
Pixel dimensions
3401 x 5103 pixels
width x height
Megapixels
17.4 megapixels
Total dimensions (with bleed)
Pixel dimensions
3545 x 5247 pixels
width x height
Megapixels
18.6 megapixels

Common examples

References

  • Dots per inch
  • Bleed (printing)

    • Frequently Asked Questions

    What DPI should I use for printing?

    300 DPI for high-quality prints (photos, brochures). 150 DPI for magazines. 72-96 DPI for large format (billboards, banners) viewed from distance. Newspaper = 72 DPI. The farther the viewing distance, the lower DPI needed.

    How do I calculate pixels from print size and DPI?

    Pixels = Inches × DPI. For 8×10 inch at 300 DPI: 8×300 = 2400 pixels wide, 10×300 = 3000 pixels tall. For metric: convert mm to inches first (÷25.4), then multiply by DPI.

    What is bleed in printing?

    Bleed is extra image area beyond the trim line, typically 3mm (0.125 inch). It ensures no white edges after cutting. For an A4 page with bleed, design at 216×303mm instead of 210×297mm. Total pixels increase accordingly.

    What is the difference between DPI and PPI?

    PPI (pixels per inch) describes screen/image resolution. DPI (dots per inch) describes printer output. A 300 PPI image prints well at 300 DPI. They're often used interchangeably, but technically DPI refers to physical printing dots.