Is the M4A to WAV conversion lossless?

The output is uncompressed 16-bit PCM WAV, which is lossless from the decoded source. However, if your M4A input was already compressed, that information cannot be recovered — but no further loss is introduced.

Do you upload my file to a server?

No — the conversion happens entirely in your browser using the Web Audio API. Your file never leaves your device. This is faster than upload-based converters and protects your privacy.

What's the maximum file size?

Browser tools work best with files under 200 MB. Larger files may hit memory limits on lower-end devices. For batch conversion or very large files, use the Loudify app.

M4A to WAV Converter Online — Free Browser Tool

M4A to WAV Converter Online

Convert M4A files from your iPhone or iTunes library to uncompressed WAV for editing or archival.

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Drop a M4A file or click to convert

Auto-converts to WAV on upload · Files stay on your device

Need to convert video formats?

This browser tool handles audio formats. The Loudify iOS app converts and boosts video audio together — no upload, no file size limits.

Get Loudify (iOS) →

Why convert M4A to WAV?

Convert M4A files from your iPhone or iTunes library to uncompressed WAV for editing or archival.

How this converter works

Drop a M4A file and the tool decodes it using the Web Audio API, then re-encodes it as WAV. The entire process runs in your browser — your file never uploads to a server, never gets stored, and conversion is typically faster than upload-based tools because there's no network round trip.

The WAV output is uncompressed 16-bit PCM — the standard format for editing in DAWs (Logic Pro, Ableton, Pro Tools, Reaper) and the lossless reference format for audio archives.

FAQ

Is the conversion lossless?

Output is uncompressed 16-bit PCM WAV, which is lossless from the decoded source. If your M4A was already compressed, that information can't be recovered — but no further loss is introduced.

Will my file be uploaded?

No. The conversion is browser-based using the Web Audio API. Your file stays on your device the entire time.

Maximum file size?

~200 MB is the sweet spot for in-browser processing. Larger files may hit memory limits on phones and older laptops. For batch conversion, use the Loudify app.