How do I convert WAV to FLAC?

Add your WAV file to the upload area above, then press Convert. The FLAC file downloads straight to your device. You do not need an account, and there is no watermark.

Are my files uploaded to a server?

No. This conversion runs entirely inside your browser using WebAssembly, so the file never leaves your device — you can even disconnect from the internet after the page loads and it will still work.

Does converting to FLAC reduce quality?

No. FLAC is a lossless format, so the conversion preserves exactly what is in your WAV file. Note that it cannot recover detail that was already discarded when the WAV was first created — a lossless container does not undo earlier compression.

How large a file can I convert?

Up to 300 MB per file for this conversion. Because the work happens in your browser, the practical limit is your device's memory — larger files work on a desktop with plenty of RAM and may fail on an older phone.

Can I convert several files at once?

Yes. Add as many as you like and press Convert All. Each file is processed independently, so one failure does not stop the rest, and you can download everything together as a ZIP.

Can I use this on my phone?

Yes. FileTools360 works in mobile browsers on iOS and Android, including choosing files straight from your camera roll. Very large videos may run out of memory on a phone — those are better converted on a laptop.

AudioLosslessRuns in your browser

WAV to FLAC Converter

Turn WAV files into FLAC in a couple of clicks. Uncompressed PCM audio. Perfect quality, big files. Lossless compression — CD quality at roughly half the size. The conversion is lossless — every pixel, sample or byte in the source is preserved.

On your deviceNever uploadedGone when you close the tabHow this works

Drop your files here

WAV files (.wav, .wave) · up to 300 MB each

or paste files from your clipboard

Ready when you are

Drop a WAV file above and FileTools360 will turn it into FLAC — right here on your device, without uploading anything.

⌘K to search converters

How to use it

1
Add your WAV files
Drag them onto the upload area, choose them from your device, or paste them from your clipboard. You can queue several at once.
2
Adjust the settings if you want to
The defaults suit most people. Open Advanced to control bitrate, sample rate and channels and start and end times.
3
Convert and download
Press Convert. Everything happens on your own device — nothing is uploaded. Download files one by one, or grab them all as a ZIP.

WAV and FLAC explained

WAV stores uncompressed PCM audio — the raw samples, exactly as captured. A stereo CD-quality minute is roughly 10 MB, which is the price of having no compression whatsoever.

FLAC compresses audio losslessly, typically to about half the size of WAV. Decompressed, it is bit-for-bit identical to the original — the compression is mathematical, not perceptual.

Where WAV files come from: Recording sessions, sample libraries and audio editing.
Where FLAC is used: Hi-fi music libraries and archival rips of physical media.

WAV vs FLAC

The two formats solve different problems, which is why converting between them involves trade-offs rather than a straight upgrade.

WAV compared with FLAC
Property	Source	Target
Compression	Uncompressed	Lossless
Introduced	1991	2001
Browser support	Universal.	Great on desktop and Android; iOS support is newer.

WAV is stronger at: Perfect fidelity with zero compression artefacts. No decoding overhead, so editors scrub instantly. Universally supported.
FLAC is stronger at: Lossless — provably identical to the source. Roughly half the size of WAV. Rich metadata and cover art support.

Why convert WAV to FLAC?

People make this switch when they run into the limits of WAV: distribution or storage on a phone. FLAC is the better fit when archiving music you may want to re-encode later, or storing CD rips.

There is also a size argument: WAV stores data with little or no compression, so the FLAC version is normally dramatically smaller for the same content.

WAV limitations that prompt the switch: Very large files. No standard metadata support worth relying on. Impractical for distribution.
What you give up: Much larger than MP3 or AAC. Not supported natively by all portable devices.

Does converting WAV to FLAC reduce quality?

Both formats store the content without discarding data, so this conversion preserves it exactly. The file size may change because the two formats compress differently, but the content itself is unaffected.

About these formats

Source

Waveform Audio

Uncompressed PCM audio. Perfect quality, big files.

Extensions: .wav, .wave
MIME type: audio/wav
Best for: Editing and mastering · Sound design · Archival
Compatibility: Universal.

Target

Free Lossless Audio Codec

Lossless compression — CD quality at roughly half the size.

Extensions: .flac
MIME type: audio/flac
Best for: Hi-fi music libraries · Archiving · Audiophiles
Compatibility: Great on desktop and Android; iOS support is newer.

Good to know