🎵 Video to MP3 Converter ☆

Convert video to MP3 in your browser

Free Video to MP3 Converter extracts the audio track from any video file and saves it as MP3. Conversion runs locally with FFmpeg (WebAssembly) and the LAME encoder. Your file is never uploaded.

Choose your bitrate

• 192 kbps, best quality for music
• 128 kbps, balanced, great for podcasts
• 96 kbps, smallest files for voice notes

How to convert

• Drop an MP4, MOV, MKV or WebM file above
• Pick the audio quality
• Convert and download the MP3

No watermark, no sign-up, and the only limit is your device's memory.

How the audio extraction works

The video file is read locally and decoded with FFmpeg compiled to WebAssembly, then the audio track is encoded to MP3 with the LAME encoder. Video streams are simply ignored, so extraction is fast and the output contains only audio. Bitrate determines the quality/size trade-off: 192 kbps for music, 128 kbps for podcasts, 96 kbps for voice notes. No re-encoding of the video happens, and the original file is never modified.

How it works and what it supports

Privacy: files stay on your device

Converting a video on a server would mean uploading it in full. Here the file is read with the File API and processed in a WebAssembly sandbox in your browser: nothing is transmitted, stored or logged, and closing the tab releases the memory.

Getting the best audio

• Choose 192 kbps for music and archive copies.
• Use 128 kbps for spoken-word podcasts and lectures.
• Pick 96 kbps for voice memos where size matters.
• Large videos process faster on desktops due to memory limits.
• Keep the original video until the MP3 is verified.

Related: browse the conversion tools for GIF, subtitle and document conversions.

Bitrate, sample rate and channel choices

Three settings decide how the extracted MP3 sounds and how large it gets. Bitrate is the main lever: 128 kbps is acceptable for podcasts and voice notes, 192 kbps is a good default for music, and 320 kbps is the practical ceiling for MP3, beyond that the format itself becomes the limit. Constant bitrate keeps the size predictable, while variable bitrate spends more data on complex passages and less on silence, usually producing a smaller file at the same perceived quality. Sample rate should match the source where possible: 44.1 kHz for CD-derived audio and most web video, 48 kHz for footage from cameras and screen recorders. Resampling to a different rate does not improve quality and can introduce faint artifacts, so leave it alone unless a target device demands something specific. Channels matter for size as much as fidelity: a stereo file is roughly twice the data of a mono one, and a voice recording destined for a phone line or a transcription service is often better in mono. To estimate the result, multiply bitrate by duration, 192 kbps is about 1.4 MB per minute, so a 5-minute track lands near 7 MB. The converter writes the tags and the duration header after encoding, so players show the correct length immediately.