My Japanese name is 纯子,how do i write it in english spelling(in letters)?

Question:

thanks.
japanese teacher gave me this name in japanese class.

Answer:

Junko or Sumiko.
I think Junko is more poplar than Sumiko.

Anyway 純子 means "pure child".

Junko
http://en.wikipedia.org/wiki/Junko_Yagam…
http://en.wikipedia.org/wiki/Junko_Minag…

Sumiko
http://en.wikipedia.org/wiki/Sumiko_Fuji

Addtion
You wrote "纯". But "纯" is a simplified Chinese character.
Japanese write "純" instead of "纯"