Is there any quality difference between WAV and FLAC?

No. Both are lossless formats. FLAC is mathematically identical to WAV on decode — every sample is bit-for-bit the same. The only difference is that FLAC uses lossless compression to reduce file size, while WAV stores raw uncompressed PCM. Converting WAV to FLAC and back to WAV produces a file identical to the original.

How much smaller will the FLAC file be?

FLAC typically achieves 40–60% compression on typical audio content. A 100 MB WAV file commonly becomes 40–60 MB as FLAC. Highly dynamic classical music compresses more; dense electronic music with heavy limiting compresses less. The inspector on this page provides a personalized estimate for your file.

What is the best free tool to convert WAV to FLAC?

FFmpeg is the most reliable cross-platform option: `ffmpeg -i input.wav output.flac`. For a graphical interface, fre:ac (Free Audio Converter) is free and open-source on Windows, macOS, and Linux. Audacity can also export FLAC via File > Export Audio.

Does this tool upload my WAV file to a server?

No. All metadata inspection runs entirely inside your browser using the File API. Your file is read into browser memory only and is never transmitted to any server. Closing or refreshing the page clears all data.

Should I keep my original WAV files after converting to FLAC?

FLAC is lossless, so the FLAC file contains all the original audio data. You can safely delete the WAV source after verifying the FLAC plays correctly. Many archivists keep FLAC as the primary format and only export WAV when a specific tool or client requires it.

Will FLAC preserve the 24-bit depth of my studio WAV files?

Yes. FLAC supports up to 32 bits per sample and natively handles 16-bit, 24-bit, and 32-bit WAV files. The bit depth is preserved exactly during conversion. Use `ffmpeg -i input.wav output.flac` — FFmpeg automatically detects and preserves the source bit depth.

WAV to FLAC Converter

Inspect your WAV file metadata in the browser, compare WAV vs FLAC specs, and copy a ready-to-run FFmpeg command to convert losslessly.

WAV Metadata Inspector

Drop a WAV file to read its bit depth, sample rate, channels, and estimated FLAC size.

Drop WAV file here or click to browse WAV / AIFF files supported

Convert with FFmpeg

Free, cross-platform, and preserves full bit depth automatically:

ffmpeg -i input.wav output.flac

Replace input.wav with your file path. Download FFmpeg free at ffmpeg.org.

To force 24-bit output explicitly: ffmpeg -i input.wav -c:a flac -bits_per_raw_sample 24 output.flac

GUI alternatives

Audacity — open file, then File > Export Audio > FLAC (free, all platforms)
fre:ac — drag files in, select FLAC encoder, click Convert (free, open-source)
dBpoweramp — best for batch conversions, Windows / macOS (paid)
XLD (macOS) — X Lossless Decoder, converts WAV and CDs to FLAC (free)

Drop a WAV file on the left to inspect its metadata

No file is uploaded — everything runs in your browser

WAV vs FLAC — Format Comparison

Property	WAV	FLAC
Compression	None (raw PCM)	Lossless (40–60% smaller)
Quality loss	None	None — bit-perfect decode
Max bit depth	32-bit float / 32-bit int	Up to 32-bit integer
Max sample rate	Unlimited (spec)	Up to 655,350 Hz
Metadata / tags	Limited (INFO chunk)	Rich Vorbis comment tags
DAW support	Universal	Most modern DAWs
Device support	Universal	Wide but not all devices
Streaming	Not ideal (large files)	Supported (seekable)
Best for	Recording, DAW exchange	Archiving, distribution

When to Keep WAV vs. Use FLAC

Keep WAV when...

Sending files to a DAW or recording session
Delivering stems to mixing engineers or clients
Uploading to platforms that require WAV (some broadcast systems)
Working with hardware that does not support FLAC

Use FLAC when...

Archiving a large music library to save storage
Distributing hi-res audio where metadata tags matter
Playback on audiophile streamers (Roon, Plex, Naim, etc.)
Backing up recordings where disk space is limited

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Summary

Both WAV and FLAC are lossless audio formats, so converting between them involves zero quality loss. WAV stores uncompressed PCM data and is universally supported, while FLAC applies lossless compression that typically reduces file size by 40–60% with identical audio fidelity. This makes FLAC the preferred choice for archiving large WAV collections or distributing high-resolution audio. This page provides a browser-based WAV metadata inspector, a WAV vs FLAC comparison table, and copy-ready FFmpeg and GUI tool instructions so you can convert confidently without installing anything to preview your files.

How it works

Drop any WAV file onto the inspector panel to read its metadata via the browser File API.
The inspector parses the WAV header to extract bit depth, sample rate, channels, and duration.
An estimated FLAC output size is calculated based on typical 50–60% lossless compression ratios.
The FFmpeg command block is updated with your actual filename for a one-click copy.
Use the copied command in a terminal, or follow the Audacity / fre:ac GUI instructions below.

Use cases

Reduce WAV archive size by 40–60% without any quality loss using FLAC.
Prepare studio-quality 24-bit / 96 kHz WAV recordings for long-term FLAC archival.
Check WAV bit depth and sample rate before importing into a DAW or mastering chain.
Estimate how much storage a batch WAV-to-FLAC conversion will recover.
Convert WAV files for playback on audiophile hardware that prefers FLAC containers.
Verify stereo vs. mono layout and channel count without opening a DAW.
Generate the correct FFmpeg command without memorizing flag syntax.
Understand whether WAV or FLAC is the better choice for your specific use case.

Frequently Asked Questions

Last updated: 2026-05-29 · Reviewed by Nham Vu