An option to alter the size of text in Photoshop is available both in the Character panel and, when a type tool is active, in the Options bar. At first glance, this option appears to be a simple drop-down menu displaying commonly-used font sizes; choosing a value from this menu sets text to that size. You can, however, also click inside the menu to the left of the menu arrow, to activate a text field where you can simply type your desired font size. Whether you use menu on the Options bar or the Character panel makes no difference -- the result is identical.
Select the text for which you want to change the font size. Depending on your selection, the new font size will be applied either:
- To the selected text, if you are currently editing a type layer and have text selected
- To any new text you type after changing it, if you are currently editing a type layer but have no text selected
- To one or more text layers in their entirety, if you have one or more type layers selected in the Layers pane
- To any new text layer you create, if you have no layer or a non-type layer selected in the Layers pane.
Click inside the text size menu to activate the text field.
Replace the existing value in the field with the new value you want to use.
If you type only a number, Photoshop uses points, the default unit of measurement. You can override this by typing the abbreviation for a different unit of measurement -- in, cm, mm, px, or pica -- after the number.
You can also change the default unit of measurement in the Units and Rulers section of Photoshop's preferences, accessed by double-clicking the ruler or by clicking Edit (in Windows -- Photoshop if you're using a Mac), hovering over Preferences and selecting Units & Rulers.
Press Enter to confirm.
To get the desired appearance for your text, you may also need to alter the leading. The default leading is based on the font size, so if you've enlarged only some of your text, the resulting leading could be too high. If you've previously altered the leading for your text to something other than the default, on the other hand, your text lines may overlap after you increase the font size.