How do I convert MP4 to MP3?

Upload your MP4, choose MP3 as the output, and tap Extract Audio. Your MP3 downloads in seconds, with no signup and nothing uploaded.

Is extracting audio from video free?

Yes, completely free. No signup, no watermark, no limits.

Does my video get uploaded to a server?

No. Everything happens in your browser. Your video never leaves your device.

Which video and audio formats work?

You can upload MP4, MOV, MKV, WebM, AVI, FLV and more, and save the audio as MP3, WAV, AAC, FLAC or Opus.

Will the audio lose quality?

If the format you pick matches the source audio, Sondra copies the track with no quality loss. Otherwise it re-encodes at the quality you choose. For lossless results, pick WAV or FLAC.

Can I extract audio on my phone?

Yes. Sondra works in mobile browsers (up to 100MB on mobile, 500MB on desktop), with no app to install.

Convert Video to Audio Online

Pull the audio out of any video. Turn MP4 into MP3, or grab the sound from MOV, MKV, WebM and AVI as MP3, WAV, AAC, FLAC or Opus. Free, runs in your browser, nothing gets uploaded.

Drop your video here

or click to select a file

Supports MP4, MOV, MKV, WebM, AVI, FLV and more (up to 500MB on desktop, 100MB on mobile)

Instant Never Uploaded Free

How It Works

1. Upload your video

Pick any video file. MP4, MOV, MKV, WebM, AVI and more all work, and it stays on your device.

2. Pick an audio format

Choose MP3 for easy sharing, WAV or FLAC for full quality, or AAC and Opus.

3. Download

Save the audio track and you are done.

How to convert video to audio (MP4 to MP3 and more)

Maybe you want to turn a music video into an MP3, save the audio from an interview, or keep a podcast recording that came as a video file. Sondra pulls the audio out in a few seconds. Upload your video, choose MP3 (the format that plays everywhere), and download. No account, no watermark, and nothing is sent to a server.

MP4 to MP3 is the most common job, but Sondra also handles MOV, MKV, WebM and AVI. Pick WAV or FLAC when you want lossless audio, or AAC and Opus when you want the smallest file at good quality. Everything runs in your browser with FFmpeg, so your video never leaves your device.

Frequently Asked Questions

What to do next

Remove background noiseClean up hum, hiss and room noise in the audio you just saved.Compress the audioMake the file smaller for email, messaging or upload.Convert to another formatSwitch between MP3, WAV, FLAC, AAC and Opus.