Most online converters upload your audio to their servers. MP3 to WAV Convert doesn't: it decodes your MP3 and writes the WAV entirely in your browser, so files never leave your device, even private recordings. • Batch convert, then download everything as one ZIP • Keep the original sample rate or pick 44.1, 48, 22.05 or 16 kHz • 16-bit, 24-bit or 32-bit float; stereo or mono • Works on Windows, Mac, iPhone and Android • Free, no sign-up, no limits, in 4 languages