Brynn: (some/all?) Europeans use a comma instead of a decimal point so 25,4 means 25.4 see: google [countries that use comma for decimal point] --> https://en.wikipedia.org/wiki/Decimal_mark Regards ... Alec On 2017-02-07 Tue 3:26, brynn wrote:

Example: an A4 is 210 mm x 297 mm. Let's convert it in px using the 90 DPI convention: 210/25,4*90 = 744 px 297/25,4*90 = 1052 px " I think it uses math symbols that I don't understand. (I've learned math with that ancient world of inches, feet and yards, rather than metric system.)

Is it 210 divided by 25? If it is, why do you divide by 25?

I think 4* 90 means 4 times 90, but I don't understand where the 4 comes from. And the comma is foreign to me, if it means anything more than pause.

Thanks again, brynn

-----Original Message----- From: LucaDC