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F FlipItFile

Convert WAV to MP3

Turn bulky uncompressed WAV into compact, universal MP3. Runs on your device.

or click to choose — supports batch upload

.wav · processed on your device

Up to ~200 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 WAV audio in, or click to pick them.

2

Your device converts them

ffmpeg runs locally via WebAssembly — nothing uploaded.

3

Download as MP3

192 kbps, roughly a tenth the size. Single file or ZIP for batches.

About WAV and MP3

WAV is uncompressed audio — it stores the raw PCM waveform with nothing thrown away. That makes it the gold standard for recording and editing, but it also makes the files enormous: a few minutes of stereo audio can run tens of megabytes, and an album's worth quickly fills a drive or chokes an email attachment.

Converting WAV to MP3 compresses that audio to roughly a tenth the size while staying universally playable on every phone, player, and car stereo. MP3 is lossy — it discards data your ears are unlikely to notice — but at 192 kbps the result is transparent for almost all listening. Our converter uses libmp3lame (the reference MP3 encoder) at 192 kbps, a sensible default that balances quality and size.

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.
Will I lose quality?
MP3 is lossy, so technically yes — but at 192 kbps the difference from the original WAV is audibly transparent for normal listening. If you're archiving masters or doing further editing, keep the WAV; if you just want to listen or share, MP3 is the better trade.
How much smaller will the file be?
Roughly 10x smaller. A 50 MB WAV typically lands around 5 MB as a 192 kbps MP3, which is the whole point of the conversion.
Can I convert multiple files at once?
Yes. Drop several WAV files and you'll get a ZIP of MP3s. The audio engine loads once and then processes each file in sequence.
Are my files uploaded?
No. ffmpeg-wasm encodes the MP3 inside your browser. Your WAV — often a large uncompressed master — never has to make the round trip to a server.
What's the maximum file size?
Around 200 MB per file, bounded by browser memory. Since WAV is uncompressed, even short recordings can be large; a typical few-minute file converts in seconds after the initial engine load.

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