javascript - Google Docs Pixels to Inches

Question

Is anyone aware of the formula google docs use to convert pixels to inches?

Right click on a cell and click table properties then you get the image below, note I have opened up firebug and you can clearly see each td is set with a px width. I can work with inches or mm or equivalent for printing to pdf but pixels is not so accurate.

This is all done on client side hence the javascript tag...

Answer 1

Haroon, I'm not sure what you're trying to do, but PC displays are generally 96DPI and I think google have emulated this with the zoom level they have set in their documents webapp.

We can confirm it's close, by taking a screenshot of googledocs and pasting it into paint, and then measuring the document width.

I got 796 pixels from my select tool in paint. I am using A4 portrait pages that are 210mm wide. This means we can do 796/210 to get our pixel density.

1 millimetre = 3.79 pixels

multiply by 2.54

1 inch = 96 pixels

I don't know if this will remain consistent with other monitor resolutions or paper sizes, but I would expect it would be close!