Aspect ratio calculator..

Hi all,

just dug this up..

Aspect Ratio Calculator

and thought it might be useful to you. If you want to reduce or enlarge an image keeping the aspect ratio correct, then this works it out for you. For instance you have a jpg still at camera size. ie. 3008x2000 pixels, and want it reduced to say 800 pixels in width to post on the web. How do you work out the depth? Apart from a calculator..

Enter the size of the source image in the top line, and one of the dimensions for the destination image, like so..




Click on Calculate and you get..




so you now know that to keep the same aspect ratio, your image needs to be 800x532 pixels. This can be used for paper sizes or anything else rectangular that you need to work out.

Hope that helps someone,

Cheers

Liam

Potentially useful program, usually though I just check the "maintain aspect ratio" box in Photoplus.

Interesting, but I'm not sure why you would need it. You get the figure intantly in Photoshop when you resize.

Hi,

I'll use it to work out the sizes when opening images as layers.. but then I use GIMP rather than PS, so I don't think I have the facility that you have. :

Cheers

Liam

Another trick if you're cropping (in Photoshop) is to use the rectangular select marquee, rather than the crop tool, and set it to 'fixed ratio'. Then you can keep whatever aspect ratio you want and also have consistent results across a batch of images. (The crop tool doesn't, as far as I'm aware, allow you to set a fixed aspect ratio.)

After selecting the area you want to keep, you can select 'crop' from the 'image' drop-down menu.

good grief this is an old thread! I was still using Windows when I posted above!

GIMP has now advanced to the point where it too has a "fixed aspect ratio" option on its crop tool.

At the point where GIMP has a useful option available, anyone who finds their editor of choice does not have that option should consider downloading GIMP, it is free after all.