Voice Translator — Translate Speech Online in 50+ Languages

More than fifty languages are available, but the useful question is about pairs rather than about the list. Between two well-supported languages — English, Spanish, French, German, Chinese, Japanese, Korean, Arabic, Russian, Portuguese — a straightforward sentence survives the trip intact. Two smaller languages paired with each other is where it degrades, because the translation usually goes through English in the middle and each hop loses something. Short sentences with one idea each travel far better than long ones; and in a real conversation the recognition, not the translation, is what usually breaks first, so speak up and pause between turns.

Yes. Use Face-to-face mode: place the phone between both people and take turns speaking. Each person's speech is translated to the other's language.

Recognition, which is the part that needs the network — the browser sends the audio to a speech service and gets words back, so with no connection there is nothing to translate. Translation itself is the more forgiving half: in Chrome it can run on your own device, while other browsers send the text to an online service, which means Chrome degrades more gracefully on a weak connection than the others do. In practice, on a patchy mobile network, the failure looks like silence rather than an error message — you speak, nothing appears, and the natural reaction is to speak louder. Check the signal before checking the microphone.

Google Chrome provides the best speech recognition and on-device translation. Edge and Safari also work. Firefox has limited speech-recognition support.