# Maximum Photoshop Custom Brush Size

**URL:** <https://forum.kirupa.com/t/maximum-photoshop-custom-brush-size/210765>\
**Category:** design\
**Created:** [December 21, 2006, 9:49pm UTC](https://forum.kirupa.com/t/maximum-photoshop-custom-brush-size/210765 "2006-12-21T21:49:35Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sintax321](https://avatars.discourse-cdn.com/v4/letter/s/d78d45/32.png) [@sintax321](https://forum.kirupa.com/u/sintax321)\
**Post date:** [December 21, 2006, 9:49pm UTC](https://forum.kirupa.com/t/maximum-photoshop-custom-brush-size/210765/1 "2006-12-21T21:49:35Z")

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Does anyone know the max specs for defineing a custom brush. I want to make large ones for to work with on 300+ DPI projects but there seems to be a limit to how big they can be. Is it dependent on actual canvas size or is it a resolution issue? I’m just getting tired of using trial and error to find brush sizes that work.

Thanks