FLAC to WAV converter

This route is about who has to open the file, not about sound quality. A hardware recorder, a legacy viewer or a player with no FLAC codec needs plain PCM, and unwrapping FLAC hands it the same audio in a much larger container.

WAV stores raw PCM, so the file is much larger than the compressed source.

Drop files here or Choose files FLAC, up to 60 MB

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Check who has to open the file

Illustrative: Lena has mastered a track as FLAC and must deliver it to a hardware recorder and a legacy lab viewer. Neither has a FLAC decoder, and neither cares about disk space. The deliverable is defined by the receiver's supported formats, so there is no quality knob to argue about here. The conversion is a handoff, and the only real choice is how the PCM is written.

Hardware recorders and field devices often accept only WAV PCM
Legacy viewers, lab tools and some DAW import paths expect uncompressed audio
Players without a FLAC codec may refuse the file or fall back to silence
A receiver that already reads FLAC should get FLAC — do not grow the file for nothing

Run the handoff in order

There is one decision to make: the sample depth. Everything else is carried from the source, including length, sample rate and channel layout.

Open the FLAC on this page; the local FFmpeg worker loads on first use
Set sample depth to match the receiver — 16-bit for a fixed device spec, 24-bit for a DAW working at that depth
Convert one file, up to 60 MiB and 600 seconds of audio
Confirm the reported duration and channel count, then play the WAV on the receiving side before shipping it

Why depth is a compatibility choice here

Sample depth changes how the PCM is written, not what was recorded. A device expecting 16-bit input may reject or misread a 24-bit file, so the depth is chosen for the receiver rather than for fidelity. Run it again at the other depth if two receivers need different specs.

Handoff questions

Does unwrapping FLAC change the audio?

No. FLAC is lossless, so the WAV carries the same samples. The engine writes PCM without re-encoding the audio content, and it does not resample or alter the channel count.

Why does the file become so much bigger?

WAV stores raw PCM with no compression, while FLAC stores the same samples encoded. Expect a large increase in bytes for the same duration and the same sound.

Which sample depth should I choose?

Match the receiver. 16-bit is the common default and suits devices with a fixed input spec; 24-bit suits a DAW or lab tool that records at that depth. The choice is about compatibility, not fidelity.

Is the master uploaded to a server?

No. The decode runs inside this page through a self-hosted FFmpeg worker served from the same origin, and the page must be served over http or https.

Can I convert a batch of masters?

No. This route takes one file per run, up to 60 MiB and 600 seconds of audio, so a library is handled file by file.

What the receiving side gets

The same audio, in a container the receiver can read, at a much larger size. Plan the transfer accordingly — a delivery that fit comfortably as FLAC may now exceed a mailbox or a slot.

On the FLAC side	On the WAV side	Why it matters
Compressed lossless storage	Raw PCM samples	The receiver needs uncompressed audio, so the byte count grows
One FLAC file per run	One WAV file per run	A library is handled file by file, not in a batch
Source sample rate and channels	Carried unchanged	No resampling, so the receiver gets the original timing
Duration probed before delivery	Duration checked against the source	A truncated unwrap is reported instead of delivered

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