MP3 to WAV Converter

Convert MP3 to uncompressed WAV for editing and mastering. Free, in your browser, no signup and no watermark.

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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

WAV is uncompressed audio, the format audio editors and mastering tools love because every save stays clean instead of piling on compression. Converting MP3 to WAV decodes your track to raw PCM and stores it without further loss, which makes it easy to import and edit. It does not make a compressed MP3 sound better, but it does keep it from getting worse while you work.

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 MP3 to WAV

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

Try it

Estimate your WAV

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

Quality

Length10 min

1 min60 min

Estimated WAV size103MBCD, 16-bit stereo

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

The formats

MP3 vs WAV

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

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?

Converting a lossy file to a lossless one cannot restore detail that was already discarded. It only makes a larger file.
Going from a high-quality source to WAV keeps the sound clear while changing the format.
Each pass between two lossy formats loses a little, so always convert from the best source you have.

Use cases

What people use it for

Music librariesStandardise your collection

ListenersUse a format your player likes

PodcastersMatch your host requirements

EditorsImport audio your tool accepts

DevicesPlay on phones and car stereos

Troubleshooting

If something looks off

The WAV is larger than I expected

Lossless and uncompressed formats are big by design. If you want a smaller file, pick a lossy format and a bitrate around 192 to 256 kbps.

The song details are missing

Title, artist, and album travel as tags when the source has them. If they are blank, add them in any music app after converting.

My app will not open the WAV

Most apps open common audio, but a few are picky. VLC plays almost anything, or convert to MP3 for the widest support.

FAQ

MP3 to WAV questions

Does converting MP3 to WAV improve the quality?

No, and this is the common myth. The conversion decodes your MP3 to raw audio and stores it in a larger WAV, but it cannot rebuild the detail that MP3 compression already removed. The WAV sounds exactly like the MP3, just in a bigger, uncompressed file.

Why convert MP3 to WAV then?

The real reason is editing. Audio software, samplers, and mastering tools work best with uncompressed WAV, and saving a WAV repeatedly does not add new compression artifacts the way re-saving an MP3 does. It is the format to use while you cut, mix, or process the audio.

Why is the WAV file so much larger?

WAV stores raw, uncompressed PCM audio, so it runs around 10 MB per minute. A small MP3 can balloon into a file several times bigger after conversion, which is normal because nothing is being compressed away.

Is the MP3 to WAV converter free?

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

How do I convert MP3 to WAV?

Upload your MP3, choose WAV as the output, and start. Download the WAV when it finishes, or open it in the editor to trim or adjust it before you export.

What plays WAV files?

WAV is one of the most widely supported formats around, opening in every audio editor, media player, phone, and browser. It is a safe choice when you need a file that any software will accept.

Does the MP3 to WAV converter work on iPhone, Android, Mac, and Windows?

Yes. The converter runs in any browser, so you can convert MP3 to WAV on iPhone, iPad, Android, macOS, Windows, Chromebook, and Linux with nothing to install.

Should I keep the original MP3 too?

Yes, keep it. The MP3 stays your smallest copy for everyday listening and sharing, while the WAV is the working file for editing. Once you are done editing, you can convert the WAV back to MP3 for a compact final version.