Setting the maximum canvas size for printing

When printing out an image, the resolution is measured in ink dots per inch (dpi). Therefore, when setting up your canvas you need to take the pixel size of your image and select a printing resolution (150 or 300 dpi) to calculate how big your image will print. 


In Sketchbook for mobile devices, the maximum canvas size will be limited by the capacity of the device. Different devices will max out at different sizes, though the ultimate maximum canvas size is 100 megapixels. Keep in mind that bigger may not be better - a 4k canvas on your mobile device will be a very large file, taking both storage on your device and impacting performance due to the RAM requirements of such a large file. 


See below for some common document sizes.


Dimensions of A-series paper sizes

Size Width x Height (mm) Width x Height (in)
A1 594 x 841 mm 23.4 x 33.1 in
A2 420 x 594 mm 16.5 x 23.4 in
A3 297 x 420 mm 11.7 x 16.5 in
A4 210 x 297 mm 8.3 x 11.7 in


US Paper sizes

Size Width x Height (mm) Width x Height (in)
Letter 216 x 279 mm 8.5 x 11.0 in
Legal 216 x 356 mm 8.5 x 14.0 in


Standard photo print sizes and resolutions

Print size Image size for 300 dpi
3 x 5 inches 900 x 1500 pixels
4 x 6 inches 1200 x 1800 pixels
5 x 7 inches 1500 x 2100 pixels
8 x 8 inches 2400 x 2400 pixels
8 x 10 inches 2400 x 3000 pixels
8.5 x 11 inches 2550 x 3300 pixels
9 x 16 inches 2700 x 4800 pixels
11 x 14 inches 3300 x 4200 pixels
11 x 16 inches 3300 x 4800 pixels