P: Allow simple maths in number fields.

It's not just that we "expect the same behavior", but that we expect features that make sense and expand the usefulness of the program.

This feature would eliminate the need for a separate calculator program in many cases. That's a plus! Get it? PUN INTENDED

Could you guys add Logarithmic Resizing? It would save me some work and error when calculating.

why am I unable to do equations in photoshop width and height boxes like I do in illustrator?
i.e. new document box i can enter 6*72 (as I prefer to work in points) in the width or height box in illustrator and get 432pt. But not in photoshop.........

Agreed with all of the above; I use Illustrator on a daily basis for sign and poster layouts and frequently make use of this feature in numeric fields. In Photoshop, often used for pixel-perfect web design mockups and UI design, the feature seems to be a no-brainer, and is often a source of frustration for me that it isn't present.

I can't tell you how much time i wasted on this. In package design when you want to put something on each side of a box you need to rotate the same layer with x°. You can't enter 76+90 to the drop shadow for example. Also in webdesign where you need to be pixel perfect you can't just enter x+73px when you free transform sg. and so on. I mean every app has simple math in input fields and you would think it's called a creative SUIT for a reason but...

I even would suggest a little popup calculator for all these number-input-fields. I saw this great little feat in autodesk combustion and inferno. Quite nice - but that should be as an addition to the "inline" calculation.

Great suggestion! This would be a nice addition to Photoshop for sure! It would improve functionality of Image Size and Image Rotation as well.

InDesign, After Effects and Illustrator have that functionnality. Cross-programs users expect the same behavior in Photoshop...

It works in most Adobe products, but very limited. It should support chained calculations such as 3*(15-4)/2.4.