New Document dimensions not the same as Image Size.

[Helga232257797935]

Please can someone clarify this for me.

When making a New Document with specific height & width and then viewing the Image Size in Photoshop, the dimensions are not the same - it is always out by a fraction. (Mac 11.2, Photoshop 2022 fully updated)

[davescm · Accepted solution]

Photoshop works in whole pixels. There cannot be partial pixels.  Your document size is 300mm high at 300 pixels per inch.

That means the document would need to be 300 x 300/25.4  = 3543.3 pixels high. Rounded to whole pixels that is 3543 and therefore measures 25.4 x 3543 / 300  = 299.97mm high.

If you are going to work in metric measurements then use pixels /cm to avoid rounding

Dave

[Helga232257797935]

Many Thanks! So glad you confirmed my suspicion.

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