1) Using the keyboard shortcuts to increase/decrease the font size also works.
The shortcuts have changed over time. From this site the new ones are Ctrl+- and Ctrl++.
These work on both Windows and OS X.
Notes:
- Works on the current selection, increasing/decreasing different current sizes appropriately;
- Only works at insertion point for a +1/-1 (the last shortcut entered) size change;
- Doesn't work on the last newline character of note (if any). Just delete it and press Enter to fix.
2) The Format > Font… menu shortcuts are:
Ctrl+D or
Right Click,F or Alt+(O;F) or Alt,O,F followed by Tab,Tab <size> Enter.
These are the ones for Windows. (OS X to come)
Notes:
- Works on the current selection, resetting different current sizes;
- Works at the insertion point for any size change;
- Doesn't work on the last newline character of note (if any). Just delete it and press Enter to fix.
Unfortunately, there doesn't seem to be any way to set the new note default size* to a non-standard one.
* Tools > Options > Note or Alt,T,O,Shift+Tab,Right,Right,Tab,Tab <type size> Enter
Caveats: Tested on Evernote 5.8.4.6870 (274870) Public on Windows