Ogham is not a language, but an alphabet. Much like the English language uses the Latin alphabet, the ancient Irish spoke Primitive Irish and used the Ogham alphabet.
A translator translates from one language to another, whereas a transliterator or transcriber converts letters from one alphabet to the corresponding letters of another alphabet.
This tool simply converts Latin characters (eg. ABC) to Ogham symbols (eg. ᚐᚁᚉ) – this is called transliteration. This tool does not translate from English to Primitive Irish and there is no such translator in existence.
If you are looking for examples of the Primitive Irish language as used with Ogham, please see the Wiki article Ogham inscriptions.