Converting the MM to pixels
In Sketchbook Pro, some of the default settings in canvas and image size are a mix of the pixels, inches, cm and mm; it also includes percentages as well. It is not the best really.
So with a bit of googling, I created two tables to help me set the canvas size by reference to the standard A (A4, etc). The difference between the two is the PPI (pixels per inch) setting. Sketchbook Pro defaults to 100 PPI but apparently the standard for websites is 96 PPI. So I did a table for both.
Table One - 96 PPI
| Paper Size | Pixels (rounded up) | Millimetres | Inches (one eighth of an inch is 0.125) |
|---|---|---|---|
| A0 (large) | 3179 x 4490 | 841 x 1188 | 33.125 x 46.8125 |
| A1 | 2245 x 3179 | 594 x 841 | 23.375 x 33.125 |
| A2 | 1587 x 2245 | 420 x 594 | 16.5 x 23.375 |
| A3 | 1123 x 1587 | 297 x 420 | 11.75 x 16.5 |
| A4 | 794 x 1123 | 210 x 297 | 8.25 x 11.75 |
| A5 | 559 x 794 | 148 x 210 | 5.875 x 8.25 |
| A6 | 397 x 559 | 105 x 148 | 4.125 x 5.875 |
| A7 | 280 x 397 | 74 x 105 | 2.9375 x 4.125 |
| A8 | 197 x 280 | 52 x 74 | 2.0625 x 2.9375 |
Source: https://www.unitconverters.net/typography/millimeter-to-pixel-x.htm
Note: If you want to follow these
measurements then you will need to reset the resolution in image size dialogue
settings to “96” (on my computer it defaults to 100) see below.
Table Two - 100 PPI
| Paper Size | Pixels (rounded up) | Millimetres | Inches (one eighth of an inch is 0.125) |
|---|---|---|---|
| A0 (large) | 3179 x 4677 | 841 x 1188 | 33.125 x 46.8125 |
| A1 | 2339 x 3179 | 594 x 841 | 23.375 x 33.125 |
| A2 | 1654 x 2339 | 420 x 594 | 16.5 x 23.375 |
| A3 | 1169 x 1654 | 297 x 420 | 11.75 x 16.5 |
| A4 | 827 x 1169 | 210 x 297 | 8.25 x 11.75 |
| A5 | 583 x 827 | 148 x 210 | 5.875 x 8.25 |
| A6 | 413 x 583 | 105 x 148 | 4.125 x 5.875 |
| A7 | 291 x 413 | 74 x 105 | 2.9375 x 4.125 |
| A8 | 204 x 291 | 52 x 74 | 2.0625 x 2.9375 |