FLV to MP3 Converter

Pull the soundtrack out of any FLV Flash video and save it as a clean MP3. Free, in your browser, with no signup and no watermark.

Select FLV file →

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Click or drag and drop to upload files

We support most file types including: MP4, MOV, WEBM, AVI, MP3, WAV, PNG, JPEG, GIF, MKV, PDF, FLAC, TIFF!

EchoWave is used by creators, marketers, educators, and businesses to convert and edit media online.

Updated June 2026

An FLV carries both video and audio, but often the only part worth keeping is the sound: a song, an interview, a lecture, or an old podcast clip. Converting FLV to MP3 keeps that audio track and drops the video, so a heavy Flash file becomes a small MP3 you can play on any phone, car stereo, or music app. It runs in your browser with no signup.

Free, no sign-upNo account, no trial

Runs in your browserNothing to install

Works on every devicePhone, tablet, laptop

No watermarkClean output, every time

How it works

How to convert FLV to MP3

1
Upload your FLV
Drag your FLV onto the converter or pick it from your device. Nothing to install.
2
Choose MP3 and convert
Select MP3 as the output, set the bitrate if you want, then start. Free, with no sign-up.
3
Download your MP3
Save the finished MP3 to your device, or open it in the editor to trim or reuse it.

Try it

Estimate your MP3

Pick a bitrate and a length to see the MP3 file size before you convert.

Bitrate

Length10 min

1 min60 min

Estimated MP3 size14MBGreat for most music

An estimate. Real size varies a little with the encoder and the audio itself.

The formats

FLV vs MP3

FLV

Flash Video

Legacy Flash video from the pre-HTML5 web

Type: Flash video container
Holds: H.263, VP6, or H.264 video with MP3 or AAC audio
Typical size: Small, made for streaming
Plays on: VLC, since browsers dropped Flash in 2020

Best for:Recovering old Flash web video

MP3

MPEG-1 Audio Layer III

The most universal audio format ever made

Type: Lossy audio format
Holds: Audio only
Typical size: Small, about 1 MB per minute at 128 kbps
Plays on: Effectively everything

Best for:Music, podcasts, and audio you listen to

Will it lose quality?

The MP3 can only be as good as the audio already inside your FLV.
A bitrate higher than the source does not add quality, it only makes a bigger file.
192 to 320 kbps keeps music clear. 128 kbps is fine for speech.

Converting to MP3 re-encodes the audio. To keep it exactly as it sits inside the video, convert to M4A instead, or to WAV for an uncompressed copy.

Use cases

What people use it for

PodcastersPublish a clean audio episode

Students & lecturesReplay recordings anywhere

MusiciansSave sets to listen offline

TranscriptionSend a small file, not a video

CommutersTalks and audiobooks on the go

Troubleshooting

If something looks off

The MP3 has no sound

Some videos store audio as AC-3. The converter still handles it, but if a clip plays silent, re-download the source and convert again.

The file is too large to email

Convert at a lower bitrate, 128 kbps for talking, or trim the clip first to cut its length.

Which apps open MP3 files?

Almost anything opens it: your browser, your phone, any music app, or VLC. No special player needed.

FAQ

FLV to MP3 questions

Why convert FLV to MP3?

An FLV holds both picture and sound, but sometimes you only need the audio. Pulling it out as MP3 gives you a compact file that plays on virtually every device, and it is far easier to listen to or share than an old Flash video that browsers no longer support.

Is the FLV to MP3 converter free?

Yes. EchoWave converts FLV to MP3 with no signup, no file-count limit, no trial, and no watermark. Upload your FLV, convert it, and download the MP3 from your browser.

How do I convert FLV to MP3?

Upload your FLV, choose MP3 as the output, set a bitrate if you want, and start. When it finishes, download the MP3 or open it in the editor to trim it first.

Will I lose audio quality converting FLV to MP3?

The MP3 can only be as good as the audio already inside your FLV, and a higher bitrate cannot add quality that was not there. Many FLV files use MP3 or AAC audio to begin with, so exporting at 192 to 320 kbps keeps music clear, while 128 kbps is fine for speech.

What MP3 bitrate should I choose when converting an FLV?

Use 320 kbps for music you want to keep, 192 to 256 kbps for everyday listening, and 128 kbps for interviews or voice recordings. A bitrate higher than the FLV's original audio only makes the file bigger without adding any detail.

Does the FLV to MP3 converter work on iPhone and Android?

Yes. It runs in your mobile browser, so you can convert FLV to MP3 on iPhone, iPad, and Android without installing an app, then save the MP3 straight to your device.

Can I convert FLV to MP3 on Mac and Windows?

Yes. The converter works in any browser on macOS, Windows, Chromebook, and Linux. There is nothing to download and no account to create, which is handy since Flash playback is no longer built in anywhere.

What apps open an MP3 file?

Effectively everything: your browser, your phone's music player, iTunes, Spotify for local files, VLC, and any car stereo or smart speaker. MP3 is the most widely supported audio format there is.

Can I convert several FLV files in a row?

Yes. There are no file-count limits on these pages, so you can convert your Flash videos to MP3 one after another. Longer recordings simply take a little more time to upload and convert.