The A3 format gives the dimension in centimeters, but if I draw an image programmatically I may know just the pixels, for example I have an image of 800×1200 and so on …

So the question is: I must provide a JPEG file that fits into an A3 format, how many pixels will it be?

## Best Answer

Paper size of A3

`11.69 x 16.54`

in inches and`29.7 x 42`

in cm according to paper sizes.Image dimension in pixels per page can be calculated using the following formula:

if you set A3 as current paper size, and print at

`200 x 100 dpi`

at that page, the generated image dimension per page will be (approximately):Hope it helps.