FLV to MP3 Converter
Extract the audio track from an FLV (Flash Video) file and save it as MP3. Runs entirely in your browser — the video never gets uploaded to a server.
Drop your FLV file here or click to browse
FLV (.flv) · Max 20 MB
Free — 10-second preview, 5 conversions/month. Upgrade for unlimited
What is FLV?
Flash Video — the container that powered web video for over a decade and is still common in old downloads, screen recordings, and archived streams. The audio inside is usually MP3 or AAC. Extract it to MP3 to play the sound anywhere.
What is MP3?
The most widely used audio format. Great compatibility, small file size. Ideal for music, podcasts, and general use.
Why Convert FLV to MP3?
FLV — Flash Video — was the format that carried web video for well over a decade, and it's still lurking everywhere: old downloads, archived streams, screen recordings, and lecture captures from the Flash era. Flash itself is long dead, so playing a .flv file today is a struggle — modern browsers dropped Flash, and most current media players and phones either won't open FLV or handle it poorly. Often, though, you don't need the video at all: you want the audio — a song, a talk, a recording, the narration from an old clip. Extracting that audio as MP3 rescues it into a small, portable file that plays on absolutely everything and can go on your phone, into a playlist, or into an editor. The audio inside an FLV is usually MP3 or AAC, and this converter reads the FLV, discards the video stream, decodes that audio track, and re-encodes just the audio to MP3 — all with FFmpeg compiled to WebAssembly, running inside your browser. Nothing is uploaded, so even large archives or private recordings stay on your device. It's the simplest way to pull usable, universally-playable audio out of a legacy Flash Video file without installing any software or hunting for an ancient Flash player. If you need to keep the visuals, hold on to the original FLV; this tool is for when the sound is what you're after.
Who Uses This Converter
Rescue audio from old Flash videos
Pull the sound out of legacy .flv downloads and recordings into an MP3 that plays on any modern device.
Extract lectures and talks
Turn an FLV lecture or webinar capture into an MP3 you can listen to on the go, without the video.
Save music from archived clips
If an old FLV clip has audio worth keeping, extract it to MP3 and add it to a playlist.
Make Flash-era recordings portable
FLV won't play on today's phones and browsers. MP3 makes the audio universally shareable.
Frequently Asked Questions
How do I convert FLV to MP3?
Drop your .flv file into the converter above. It extracts the audio track and gives you an MP3 to download. Everything runs in your browser — no upload, no signup, nothing sent to a server.
What is an FLV file?
FLV (Flash Video) is the container that powered web video during the Flash era. The audio inside is typically MP3 or AAC. Because Flash is gone and most players no longer support FLV, extracting the audio to MP3 makes it playable again.
Does this keep the video or just the audio?
It extracts only the audio and saves it as MP3; the video stream is discarded. That's exactly what you want when you're after the sound from an old Flash Video file, download, or recording.
Why won't my FLV file play anymore?
Flash is discontinued and modern browsers and players dropped support for FLV. Converting the audio to MP3 — supported on virtually every device — is the reliable way to access the sound again.
Is the FLV file uploaded to a server?
No. Conversion runs entirely in your browser using FFmpeg WebAssembly, so your video never leaves your device — safe for large archives and private recordings.
Is this FLV to MP3 converter free?
Yes. Free users get 5 conversions per month. The output is limited to the first 10 seconds as a preview, with a 20MB input file size limit. Upgrade to Pro for unlimited, full-length conversions.