Is my audio file uploaded anywhere?

No. The entire conversion runs inside your browser using the Web Audio API. Your file is read from local memory and never sent to any server.

Will converting MP3 to WAV improve audio quality?

No. Converting from a lossy format (MP3) to a lossless one (WAV) does not recover the data discarded during MP3 encoding. The WAV will sound identical to the source MP3 — it is simply stored without further compression.

What sample rate and bit depth does the output use?

By default the WAV keeps the sample rate of the MP3 (for example 44,100 or 48,000 Hz), so the audio is not resampled. If your software needs a fixed rate, pick one from 8,000 to 96,000 Hz under Output sample rate. The output is 16-bit signed PCM with the same number of channels as the MP3, mono or stereo.

What is the maximum file size I can convert?

There is no hard limit set by this tool, but very large files (over ~200 MB) may be slow depending on your device memory and browser. Most typical MP3 files convert in under a second.

Why is the WAV file much larger than the MP3?

WAV stores raw, uncompressed PCM samples. A 3-minute stereo track at 44100 Hz / 16-bit takes roughly 30 MB as WAV versus ~3 MB as a 128 kbps MP3 — a roughly 10x size difference is normal.

Can I convert MP3 to WAV without installing software?

Yes, this page works in any modern browser. On a Mac, the Music app can also do it: set Settings > Files > Import Settings to WAV Encoder, select the song, then choose File > Convert > Create WAV Version.

Will the WAV open in my editor or game engine?

Yes. 16-bit PCM WAV is the most widely supported audio format and opens in Audacity, GarageBand, Premiere Pro, DaVinci Resolve, Unity and Unreal Engine.

MP3 to WAV Converter

Drop an MP3 file and download a lossless WAV copy — all processing happens in your browser, nothing is uploaded.

Drop an MP3 here and download a 16-bit PCM WAV of the same audio.

Select MP3 File

Drop MP3 here or click to browse Supports .mp3 files Output sample rate

Converted WAV file will appear here

Done!

Quick answer

Drop an MP3 here and download a 16-bit PCM WAV of the same audio. The conversion runs in your browser, so nothing is uploaded. The WAV is about 10 times larger than a 128 kbps MP3 and does not sound better, because MP3 compression losses cannot be undone.

Examples

Audio length	128 kbps MP3	WAV (16-bit stereo, 44.1 kHz)
1 minute	1.0 MB	10.6 MB
3 minutes	2.9 MB	31.8 MB
5 minutes	4.8 MB	52.9 MB
60 minutes	57.6 MB	635 MB

Drop an MP3 to convert it.

Summary

This tool decodes your MP3 file in the browser using the Web Audio API and re-encodes it as a 16-bit PCM WAV file, which is the universal uncompressed audio format. The entire conversion runs client-side — your audio data never leaves your device. The resulting WAV file is identical in content to the MP3 but stored without lossy compression, making it suitable for audio editing software, game engines, and professional workflows.

How it works

Click the drop zone or drag an MP3 file onto it.
The browser reads the sample rate from the MP3 frame header and decodes the audio at that rate with the Web Audio API, so nothing is resampled.
The decoded PCM samples are re-encoded into a standard 16-bit WAV container.
A download button appears — click it to save the WAV file.
All processing is local; your file is never sent to any server.

Use cases

Prepare audio clips for DAW projects that require WAV input.
Convert MP3 music for use in game engines or video editing software.
Archive compressed files in lossless format for long-term storage.
Provide uncompressed audio to hardware devices that do not support MP3.
Prevent compounding generational loss during subsequent audio editing and re-exports.
Convert voice recordings from MP3 to WAV for speech-recognition tools.

Frequently Asked Questions

Last updated: 2026-05-29 · Reviewed by Nham Vu