I've known about this website for a couple years but I'm always a little worried about translators. This site - ogham.co seems to be okay, as it tells you what letters are missing from the alphabet and shows it in the spelling out in Ogham.

Does anyone know if it is a decent Ogham translator? Sometimes its just handy to have something easy to use.

It is.
It does what it says it does: transliterating, giving an Ogham letter for a Latin letter and putting them in the right order (from bottom to top).
It doesn't translate (except for a few phrases).