Google Translate

Google Translate is a free translation service covering more languages than any competitor, across text, documents, images and speech.

Its coverage of less-common language pairs is its distinguishing strength — for major European pairs other engines often produce better prose, but for many languages it is the only option that works at all.

Quality varies sharply by language pair and by text type: it handles straightforward informational text well and idiom, legal precision and marketing tone poorly.