M4A to WAV Converter
Convert M4A to an uncompressed WAV file right in your browser — a common 1,900+/month search. Nothing is uploaded, and you can preview the result before downloading.
M4A to WAV Converter
🔒 Decoded and re-encoded in your browser with the Web Audio API — nothing is uploaded.
- 10.1 MB/minUncompressed WAV size = sample rate × bytes per sample × channels. CD-quality stereo (44.1 kHz, 16-bit) is about 10.1 MB per minute.
- 16 kHz monoPlenty for speech: it keeps everything up to 8 kHz, and speech-recognition models such as Whisper resample to 16 kHz mono anyway.
- −14 / −16 LUFSSpotify, YouTube and Amazon normalise to about −14 LUFS; Apple Music and Apple Podcasts to −16 LUFS; EU broadcast (EBU R128) to −23 LUFS, all with a −1 dBTP peak ceiling.
- Lossy in, WAV outConverting MP3, M4A or OGG to WAV keeps today's quality but can't restore detail the lossy codec already removed — it just makes editing lossless from here on.
Loudness measured per ITU-R BS.1770-4 (K-weighted, gated); platform targets checked October 2026.
Runs in your browser — nothing you enter is uploaded or stored.
Scratchpad auto-saved
How it works — in four simple steps
No signup and nothing to install — it all runs in your browser.
Select your file
Drag your M4A file onto the box or click to choose it from your device.
Choose the sample rate
Keep the original for full quality, or pick a lower rate for a smaller WAV.
Convert to WAV
Press Convert — the file is decoded and re-encoded to WAV on your device.
Preview and download
Play the result to check it, then download your WAV file.
WAV is uncompressed, so expect files around 10 MB per minute of stereo audio at 44.1 kHz.
Features
M4A to WAV, in your browser
Decode M4A and export a clean 16-bit PCM WAV — the format audio editors, DAWs and transcription tools expect.
Nothing is uploaded
Your file is decoded and re-encoded entirely on your device with the Web Audio API, so private recordings stay private.
Keep or lower the sample rate
Keep full quality, or pick a lower sample rate to make the WAV smaller when you don't need CD fidelity.
Preview before you download
Play the converted WAV right on the page to check it sounds right, then download it — no signup, no watermark.
About the M4A to WAV Converter
This tool converts M4A audio into an uncompressed WAV file. WAV is the format most audio editors, DAWs and transcription tools prefer, because it holds raw PCM samples that need no decoding — so your M4A plays and imports everywhere without codec issues.
Drop your file in and the browser decodes it with the Web Audio API, then the tool re-encodes the samples as a 16-bit PCM WAV you can download and preview. You can keep the original sample rate or pick a lower one to shrink the file.
Everything runs on your device — your audio is never uploaded, which matters for private recordings, and it works offline once the page has loaded. No signup, no watermark.