+0
Which one is correct?

-Translate this into/to Spanish please.

Thanks in advance.
+0
I think 'translate into' is the better choice here. That is, it's listed in the dictionary as the preposition that belongs with 'translate'. So it's the safe option.

I haven't seen anyone use 'translate to' before, altough I'm not sure if it's completely incorrect.
Comments  
I haven't seen 'translate to' anywhere either. Translate into is mostly used.