Translate into and translate to have the same meaning. Translate into is much more common and translate to is used when you use the specific phrase in both languages.
You need to translate that text into German
“This pen” was translated to “Este bolígrafo” The main difference is when you want to translate the whole project into another language or you want to translate one piece of text from one language to another language.
“Saudade” was translated to “Deep Longing”
“Schadenfreude” was translated to “Joy at somebody’s expense”
Harry Potter has been translated into 55 languages.
You need to translate your website into Spanish.
We use to when we talk about dictionaries.
Take out your English-to French dictionary