# Achieving true sizes

**URL:** <https://forum.kirupa.com/t/achieving-true-sizes/152338>\
**Category:** design\
**Created:** [June 24, 2005, 3:16am UTC](https://forum.kirupa.com/t/achieving-true-sizes/152338 "2005-06-24T03:16:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![H4T](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/h4t/32/329_2.png) [@H4T](https://forum.kirupa.com/u/H4T)\
**Post date:** [June 24, 2005, 3:16am UTC](https://forum.kirupa.com/t/achieving-true-sizes/152338/1 "2005-06-24T03:16:31Z")

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This issue has been bugging me for a very, very long time, and now its critical that I get it figured out. I want to create and print a document that is exactly 4 cm by 4 cm, but I can’t seem to get what I want. I can get the document to be 4 cm by 4 cm, but the resolution is screwing me up. I’m not sure which res. to go for, because as it stands a cm does not measure a cm when I hold a ruler up to the screen.

I’m trying to get the proportions right for a smallish tattoo I’m going to get, so as you can imagine, I need to figure out how to make Photoshop let me work with real units.