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F FlipItFile

Convert MP3 to WAV

Decode MP3 to uncompressed PCM WAV for editing and DAWs. Runs on your device.

or click to choose — supports batch upload

.mp3 · processed on your device

Up to ~100 MB per file (browser-memory limit)

Works best in Chrome, Edge, or Firefox. First conversion downloads the audio engine (~32 MB, cached forever after). Safari can struggle with files larger than about 20 MB — if a Safari conversion stalls, try it in Chrome.

How it works

1

Drop your files

Drag MP3 audio in, or click to pick them.

2

Your device converts them

ffmpeg runs locally via WebAssembly — nothing uploaded.

3

Download as WAV

Uncompressed 16-bit PCM. Single file or ZIP for batches.

About MP3 and WAV

MP3 is compressed, lossy audio — small and universally playable, but built for listening, not editing. WAV is the opposite: uncompressed 16-bit PCM that stores the raw waveform with no further compression. Audio editors, DAWs, samplers, and many editing workflows want a lossless working file, and some tools simply won't import an MP3 directly.

Converting MP3 to WAV decodes the audio into that uncompressed container so it drops cleanly into your editing setup. One honest caveat: this does not restore quality the MP3 already lost. The data discarded during MP3 encoding is gone for good — converting to WAV gives you an uncompressed file, not a higher-fidelity one. It's the right move when a tool needs WAV, not a way to upgrade audio.

Everything runs on your device via WebAssembly. The audio engine downloads once (about 32 MB), and subsequent conversions reuse the loaded engine instantly. Your audio file never leaves your machine.

Frequently asked questions

Why is there a first-time delay?
We use ffmpeg compiled to WebAssembly. The engine is ~32 MB and takes 5-15 seconds to download on first use. After that, it's cached by your browser and every subsequent conversion starts instantly.
Does this improve the audio quality?
No, and it's important to be clear about that. Converting MP3 to WAV cannot recover the data MP3 compression discarded — that information is permanently gone. You get an uncompressed file at the same effective quality, which is what editors and DAWs want to work with.
What WAV format do I get?
Uncompressed 16-bit PCM, the standard lossless working format accepted by virtually every audio editor, DAW, and sampler.
Can I convert multiple files at once?
Yes. Drop several MP3 files and you'll get a ZIP of WAVs. The audio engine loads once and then processes each file in sequence.
Are my files uploaded?
No. Decoding the MP3 to PCM WAV happens entirely in your browser via ffmpeg-wasm. The audio is never transmitted to a server.
What's the maximum file size?
Around 100 MB per MP3, bounded by browser memory. Bear in mind the WAV output will be several times larger than the MP3 input, since it's uncompressed.

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