If your UTAU's name is not english and was intended to mean something in a different language, run it through google translate and post that version of their names. You don't have to use your utau.
Ex: Mawarine Shuu (廻音シュウ) = Mawarioto oxalic
If your Utau's name was already made with google translate (first of all, shame) type the english version of their name into google translate, then re-translate the japanese result back into english
Ex: Enraged Sound = Gekido On (激怒音) = Rage Sound
If your result is kind of boring, you can translate it through multiple languages ;0
Ex: Tarou Iwata = Taro Iwata 太郎岩田 (Japanese) = Yán tàiláng 岩太郎 (Chinese) = Rock Taro
Ex: Mawarine Shuu (廻音シュウ) = Mawarioto oxalic
If your Utau's name was already made with google translate (first of all, shame) type the english version of their name into google translate, then re-translate the japanese result back into english
Ex: Enraged Sound = Gekido On (激怒音) = Rage Sound
If your result is kind of boring, you can translate it through multiple languages ;0
Ex: Tarou Iwata = Taro Iwata 太郎岩田 (Japanese) = Yán tàiláng 岩太郎 (Chinese) = Rock Taro