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WMA to FLAC Converter

Convert WMA files to FLAC format online for free. No installation or registration required.

Quick Answer: How to Convert WMA to FLAC

WMA is Microsoft's Windows Media Audio family of codecs, while FLAC is the Free Lossless Audio Codec — compresses audio 30–50% with zero quality loss. Converting WMA to FLAC wraps or re-encodes your audio into the FLAC structure, but be aware: quality lost when the WMA was created stays lost — a FLAC made from a lossy source is a perfect copy of an imperfect original. Run it free at practicalwebtools.com/convert/audio/wma-to-flac: drop in your WMA, adjust settings if you like, and download the FLAC — no signup, no upload, everything stays on your device.

WMA vs FLAC: Which One and Why

WMA is Microsoft's Windows Media Audio family of codecs, launched by Microsoft in 1999 to compete with MP3 and later AAC. FLAC is the Free Lossless Audio Codec — compresses audio 30–50% with zero quality loss, released open-source by Xiph.Org in 2001. People reach for WMA mainly for legacy Windows media libraries, some voice recorders, while FLAC is the usual choice for archiving CD collections, audiophile listening, studio masters distribution. WMA's headline strength: good quality at low bitrates (64–128 kbps). FLAC's: perfect fidelity — the decoded output is identical to the source. On the other side of the ledger, WMA limitation: near-zero support on Apple devices — and FLAC limitation: still 4–6× larger than 320 kbps MP3.

How to Convert WMA to FLAC Online

  1. 1

    Add your WMA file: Drag and drop it into the converter, or click to browse. WMA files up to the size limit are accepted, and nothing is uploaded — processing runs locally in your browser.

  2. 2

    Set FLAC options: The converter re-encodes into FLAC, which is lossless — decompresses bit-for-bit identical to the original. Set quality to maximum since you're going lossless — no reason to trim bits you already have.

  3. 3

    Download the FLAC: Conversion runs on your device. When it completes, download the FLAC file — repeat for as many files as you need, free and unlimited.

Key Facts

  • WMA: launched by Microsoft in 1999 to compete with MP3 and later AAC, lossy (Standard and Pro variants); WMA Lossless also exists.
  • FLAC: released open-source by Xiph.Org in 2001, lossless — decompresses bit-for-bit identical to the original.
  • Converting WMA → FLAC cannot restore what the WMA encoding already discarded — the FLAC is a faithful copy of the WMA, not of the original recording.
  • WMA strength: good quality at low bitrates (64–128 kbps).
  • FLAC strength: perfect fidelity — the decoded output is identical to the source.
  • WMA limitation to know: near-zero support on Apple devices.
  • FLAC limitation to know: still 4–6× larger than 320 kbps MP3.
  • Fun fact: FLAC's MD5 checksum of the raw audio lets you verify an archive is still bit-perfect years later — no other common audio format does this

Format Background

WMA

WMA — launched by Microsoft in 1999 to compete with MP3 and later AAC. WMA Pro supports high-resolution multichannel audio, but most hardware labeled "WMA" decodes only the original 1999 codec

FLAC

FLAC — released open-source by Xiph.Org in 2001. FLAC's MD5 checksum of the raw audio lets you verify an archive is still bit-perfect years later — no other common audio format does this

Frequently Asked Questions

Will converting WMA to FLAC lose quality?

The FLAC output preserves everything present in your WMA file — but WMA is lossy (Standard and Pro variants); WMA Lossless also exists, so information discarded when that file was made is gone for good. You get a bit-perfect copy of what you have, not a restoration of the original recording.

Are my files uploaded anywhere during WMA → FLAC conversion?

No. This converter runs on WebAssembly inside your browser — your WMA file is read from disk, processed by your device's CPU, and the FLAC is written back locally. There is no server upload at any point, which also means no size-based throttling or waiting in queue.

Does converting WMA to FLAC restore lost quality?

No — and this trips up a lot of people. WMA is lossy (Standard and Pro variants); WMA Lossless also exists: the data it discarded at creation time cannot be reconstructed by any converter. A FLAC from a WMA source sounds exactly as good as the WMA, no better. The reasons to convert anyway are compatibility, editing headroom, and future-proofing — not restoration.

Is FLAC still a current format in 2026?

Native in Android 3.1+, iOS 11+, Windows 10+, and all modern browsers. FLAC's MD5 checksum of the raw audio lets you verify an archive is still bit-perfect years later — no other common audio format does this

Do I need to install anything to convert WMA to FLAC?

No installation. The converter is a web page — open it in any modern browser on Windows, macOS, Linux, iOS, or Android. WMA decoding and FLAC encoding both run via WebAssembly at native-adjacent speed.

Related Converters

WMA to MP3WMA to WAVWMA to OGGWMA to AACMP3 to FLACWAV to FLACOGG to FLACAAC to FLAC

Further reading

Guides and explainers on the Practical Web Tools blog cover audio and video formats in depth — or browse every audio converters pair from the hub.