FLV to WAV Converter

Pull the audio out of an FLV and save it as an uncompressed WAV, free, in your browser, with no signup and no watermark.

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FLV to WAV Converter Features

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

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Updated June 2026

Old FLV recordings often hold the only copy of a webinar, a lecture, or a piece of music. EchoWave lifts that audio out of the FLV and saves it as WAV, the uncompressed PCM format that audio editors and studios treat as the master copy. It runs in your browser, free and with no signup, so you get a clean, editable audio file from a video that browsers can no longer play.

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 WAV

  1. 1

    Upload your FLV

    Drag your FLV onto the converter or pick it from your device. Nothing to install.

  2. 2

    Choose WAV and convert

    Select WAV as the output, set the bitrate if you want, then start. Free, with no sign-up.

  3. 3

    Download your WAV

    Save the finished WAV to your device, or open it in the editor to trim or reuse it.

Try it

Estimate your WAV

Pick a quality and a length to see the WAV file size before you convert.

Quality
10 min
1 min60 min

Drag to set the clip length in minutes, from 1 to 60.

Estimated WAV size103MBCD, 16-bit stereo

WAV is uncompressed, so the size depends only on the quality and length you pick.

The formats

FLV vs WAV

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

WAV

Waveform Audio File Format

Uncompressed studio-quality audio

Type
Uncompressed audio
Holds
Raw PCM audio, no compression
Typical size
Very large, about 10 MB per minute
Plays on
Every device and audio editor

Best for:Editing and mastering at full quality

Will it lose quality?

  • The WAV 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.

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

FAQ

FLV to WAV questions

Is the FLV to WAV converter free?
Yes. EchoWave converts FLV to WAV with no signup, no file-count limit, no trial, and no watermark. Upload your FLV, convert it, and download the WAV from your browser.
How do I extract WAV audio from an FLV?
Upload your FLV, choose WAV as the output format, and start the conversion. EchoWave keeps the audio track and drops the video, and you can download the WAV the moment it is ready.
Why is the WAV file so much larger than the FLV?
WAV is uncompressed PCM audio, roughly 10 MB per minute, while FLV stored its sound in a compressed codec like MP3 or AAC. WAV trades size for an exact, editable copy, which is why it is the format editors prefer for mastering.
Will the WAV sound better than the audio inside the FLV?
No. WAV is lossless, but it cannot rebuild detail that the FLV's compressed audio already discarded. The WAV preserves the source audio exactly as it is, with no further loss, which is its real benefit for editing.
Should I use WAV or MP3 for this audio?
Choose WAV when you plan to edit, master, or archive the sound at full quality. If you just want to listen or share it, MP3 is far smaller and plays on almost everything, so pick that for everyday use.
What opens a WAV file?
Almost everything. WAV plays in your browser, on iPhone and Android, in Windows Media Player and the macOS Music app, and it imports cleanly into editors like Audacity, GarageBand, and Premiere.
Does the FLV to WAV converter work on iPhone, Android, Mac, and Windows?
Yes. The converter runs in any browser, so you can convert FLV to WAV on iPhone, iPad, Android, macOS, Windows, Chromebook, and Linux with nothing to install and no account to create.
Can I edit the WAV after converting it?
Yes. You can open the file in the editor to trim it before downloading, or drop the WAV straight into any audio editor to cut, mix, and master it.

What people say after converting with EchoWave

Convert FLV to WAV for free Free online converter

Upload an FLV and get an uncompressed WAV back, with no signup and no watermark. Convert and download in your browser.

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