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Free local audio converter — no uploads

WAV to FLAC Converter — Free, Local, No Upload

The short answer: Converting WAV to FLAC is the archivist's move: it repacks the exact same PCM samples into lossless compression, typically cutting the file to 50–70% of its WAV size with zero change to the audio. You keep a bit-perfect master that checksums identically when decoded, but it now travels lighter, tags properly, and streams over protocols that choke on raw PCM.

How to convert WAV to FLAC

Convert WAV to FLAC now

The button opens the Audio Converter with WAV → FLAC preselected — it runs entirely in your browser and nothing is uploaded.

Open Audio Converter

Local in your browser — nothing is uploaded

  1. Open the converter

    The button above opens the Audio Converter with the FLAC output already selected.

  2. Drop your WAV file

    Add the file (up to 200.0 MiB); the format is verified from its signature, not its name.

  3. Convert and download

    Press Convert; the ffmpeg audio engine (~31 MB) downloads on first use, then your file transcodes in a dedicated worker. Cancel stops the run cleanly.

Conversion facts

Input format
WAV
Output format
FLAC
Max file size
200.0 MiB
Max output
200.0 MiB
Quality
Lossless — bitrate tiers ignored
Processing
Local in your browser — nothing is uploaded

WAV

WAV → FLAC

What to watch

Nothing audible is lost — FLAC decodes to the identical samples, so this conversion is genuinely lossless and the bitrate tiers are ignored by the encoder. The savings depend on content: quiet acoustic material compresses well, dense loud mixes less so, and already-compressed sources gain almost nothing. The output still plays in fewer places than MP3 — check the destination reads FLAC. Inputs are capped at 200 MiB and outputs at 200 MiB, with a 5-minute per-run watchdog; the ~31 MB engine downloads on first use, then stays cached on your device.

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  • The tool behind this page

    Audio Converter

    Convert MP3, WAV, M4A, OGG and FLAC audio between formats entirely in the browser with ffmpeg.wasm — no uploads. Inputs up to 200 MB with 96/128/192 kbps bitrate tiers for lossy output; OGG uses Opus and WAV/FLAC stay lossless.

Frequently asked questions

Will converting WAV to FLAC lose any audio quality?
No — FLAC is lossless compression. The converter decodes the WAV to PCM and re-encodes it with the native FLAC encoder, and decoding the FLAC returns bit-for-bit the same samples. What changes is only the packaging: smaller files, proper metadata tags, and checksums that verify the archive stayed intact.
Which bitrate should I choose for the FLAC?
None — FLAC is lossless, so the bitrate tier selector stays visible but the encoder ignores it, and the workspace says so. The output size depends on how compressible the source audio is, not on a quality setting.
Are my audio files uploaded anywhere?
No. Decoding and encoding run in a WebAssembly build of ffmpeg inside your browser tab — the file never leaves your device, nothing is uploaded or stored on a server, and closing the tab discards everything.