I am a Japanese learner and I would like to know how my name is in Japanese. My name is Bill and I have seen the translations "ビル" (biru) and "バジル" (bajiru). I am aware that バジル means "basil" but I use it most of the times. Can you please help me?
ビル is a good transcription of the name Bill. This website confirms the match: http://apps.nolanlawson.com/japanese-name-converter/#?q=Bill
This is from a yahoo question website.
Why is Bill a nickname for William? Also, why does Robert become Bob?
You're quite right about バジル being the Japanese word for basil - it would make you sound as though you were named after a herb. More to the point, it doesn't sound anything like your name. ビッル might be another transcription, but this seems strange to me and I can't find any examples of it being used.
Incidentally, ビル could also mean a multi-storey building or a bill, as in check, invoice, paper money or beak of a bird - these are loan words from English. https://ja.wikipedia.org/wiki/%E3%83%93%E3%83%AB