Just paste your Myanmar text into the "Test" field. The characters will be shown in the fonts, and hex codes will be shown.
Good news: FrontierMyanmar.net/mm is now published in Unicode. FrontierMyanmar.net/mm
Known Unicode content: bbc.com/burmese
Note: This page uses myanmar-tools on GitHib for detection and converting Zawgyi text.
Hex:
Scratch pad: