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Audio Converter Online Free

Convert between MP3, WAV, OGG, M4A, FLAC, AAC and OPUS, or extract the audio from a video — free, unlimited, and your files never leave your device.

Popular audio conversions

MP4arrow_forwardMP3OPUSarrow_forwardMP3M4Aarrow_forwardMP3WAVarrow_forwardMP3OGGarrow_forwardMP3MP3arrow_forwardMP4

Convert any audio to MP3

MP3 is still the format everything plays: cars, speakers, legacy players and every app. With this audio converter you turn WAV, OGG, M4A, FLAC, AAC or OPUS into MP3 in seconds, picking the bitrate to balance quality and size. You can also go the other way when a platform demands a specific format.

Extract the audio from a video

Need just the sound from a video? Convert MP4 to MP3 to keep the track of a video podcast, a recorded lecture or a Zoom interview. The resulting file is up to 15 times smaller than the original video and plays on any device — perfect for the commute.

WhatsApp audios and voice notes

WhatsApp voice messages arrive as OPUS files, which many players and transcription tools cannot open. Convert them to MP3 to archive, share or transcribe them. Since everything is processed in your browser, your private audios are never uploaded to any server.

Which bitrate should I pick?

For speech (voice notes, podcasts, lectures) 128 kbps is plenty. For music, 192 kbps is the sweet spot and 256-320 kbps for maximum fidelity. Remember: the output bitrate cannot improve a low-quality source — match or slightly exceed the original bitrate for the best possible result.

Private, free and unlimited

The whole conversion happens inside your browser with WebAssembly technology: your files never leave your device, there is no queue, no sign-up and no conversion limit. Works on phones (iPhone and Android) and computers, with nothing to install.

All audio conversions

MP3arrow_forwardWAVWAVarrow_forwardMP3M4Aarrow_forwardMP3OGGarrow_forwardMP3FLACarrow_forwardMP3AACarrow_forwardMP3MP3arrow_forwardOGGWAVarrow_forwardOGGMP4arrow_forwardMP3MP4arrow_forwardWAVWebMarrow_forwardMP3MP3arrow_forwardMP4OPUSarrow_forwardMP3MOVarrow_forwardMP3WMAarrow_forwardMP3

Frequently asked questions

How do I convert audio to MP3 for free?

Pick the conversion you need (for example M4A to MP3), upload your file and hit Convert. Within seconds you download the MP3. No account, no watermark, no file limits.

How do I extract the audio from a video?

Use the MP4 to MP3 conversion: upload the video and download just the audio track. It also works with WebM and other common video formats.

Can I convert WhatsApp audios?

Yes. WhatsApp voice messages are OPUS files: use the OPUS to MP3 conversion and you can play them anywhere or send them for transcription.

Which audio formats are supported?

MP3, WAV, OGG, M4A, FLAC, AAC and OPUS as input, plus audio extraction from MP4 and WebM videos. Most conversions deliver MP3, WAV or OGG.

Do I lose quality when converting?

It depends on the formats. From a lossless format (WAV, FLAC) to MP3 there is compression controlled by the bitrate you choose. Between lossy formats, use a bitrate equal to or higher than the original to keep the difference inaudible.

Are my files private?

Completely. The conversion runs inside your own browser: your audios and videos are never uploaded to our servers and no copy is kept.