Convert FLV to MP3
Extract the audio from any FLV video and save it as MP3. Free, no sign-up, and your file never leaves your device.
or drag & drop videos, audio or images here, or paste with Ctrl+V
MP4 · MOV · MKV · AVI · WebM · WMV · FLV · GIF · MP3 · WAV · M4A · and 40+ more
- Files never leave your device
- No sign-up, no watermark
- Free forever
How to convert FLV to MP3
- Add your FLV fileClick “Choose files” or drag & drop your FLV file onto the page.
- Check the outputMP3 is pre-selected. Optionally trim, crop, compress or tweak quality in the tabs.
- Convert & downloadClick “Convert & download”. Your MP3 file is created on your device and saved instantly.
FLV vs MP3
Short answer: MP3 is the universal audio format. Every music player, car stereo and phone can play it.
What is FLV?
FLV is the Flash Video format. It is still used for some live-streaming (RTMP) workflows.
What is MP3?
MP3 is the universal audio format. Every music player, car stereo and phone can play it.
Quality
Only the audio track is kept. If the codec already matches MP3 (for example AAC inside MP4 → M4A) we copy it losslessly; otherwise we encode at a high-quality default bitrate you can change.
| FLV | MP3 | |
|---|---|---|
| Full name | Flash Video | MPEG-1 Audio Layer III |
| Type | video | audio |
| Best for | RTMP streaming and legacy Flash players | Music, podcasts and maximum compatibility |
| MIME type | video/x-flv | audio/mpeg |
Last updated 2026-11-13
FLV to MP3: FAQ
Is this FLV to MP3 converter free?
Yes. Converting FLV to MP3 is completely free with no watermark, no sign-up and no file limits beyond what your device can handle. Optional Pro features like 4K export and AI subtitles are available if you need them, and a single 4K export can be unlocked without a subscription.
Are my FLV files uploaded to a server?
No, never. The conversion runs entirely in your web browser using FFmpeg compiled to WebAssembly. Your FLV file never leaves your computer or phone, and we never store it, which makes it private and fast.
Will I lose quality converting FLV to MP3?
Only the audio track is kept. If the codec already matches MP3 (for example AAC inside MP4 → M4A) we copy it losslessly; otherwise we encode at a high-quality default bitrate you can change.
How do I convert FLV to MP3 on iPhone or Android?
Open this page in Safari or Chrome on your phone, tap “Choose files”, pick your FLV file and tap “Convert & download”. No app install needed.
Can I convert multiple FLV files to MP3 at once?
Yes. Select several files and click “Convert all”. You can download them one by one or as a ZIP. Free users can batch-convert up to 5 files at a time; Pro removes the limit.
Can I edit the FLV before converting?
Yes: trim, cut, crop, rotate, resize, change speed, adjust colour, add text, music or subtitles, and more, all before you export to MP3.