Convert M4A and AAC files to uncompressed WAV. Batch convert multiple files and download as ZIP.
Free, runs in your browser.
Find SoundCloud channels that match your genre and book premieres or reposts - directly from Premierely.
Explore channelsAn M4A to WAV converter takes your M4A or AAC file and repackages it as uncompressed 16-bit PCM WAV, the format most DAWs, samplers and older hardware expect. This tool runs entirely in your browser using the Web Audio API - your files never touch a server, and there is no bitrate to choose, since WAV output is always uncompressed.
Converting is two steps, no settings to hunt for:
Voice Memos on iPhone saves recordings as M4A. If you need to drop a memo into a DAW, run it through an audio editor that expects WAV, or work with hardware that does not read M4A, converting solves it in a few seconds.
No. M4A (AAC) is a lossy format - once audio data is removed during the original encode, it is gone permanently. Converting to WAV does not bring it back. It does stop any further quality loss: the WAV holds the same audio as the M4A, uncompressed and unchanged, so nothing more gets thrown away downstream.
Compatibility. Some DAWs, hardware samplers, and older devices either require WAV or handle it far more reliably than compressed formats like M4A. If a tool in your chain rejects M4A, converting to WAV fixes that even though the underlying audio quality stays exactly the same.
M4A is a container file that usually wraps AAC audio, so the two terms overlap in practice. This tool accepts both .m4a and raw .aac files and converts either one to WAV the same way, with no difference in output.
Drop in a whole folder of M4A or AAC files and convert them all in one pass. When they finish, download the entire batch as a single ZIP instead of saving each file by hand.
If M4A or AAC is your only copy of a track, upload it to SoundCloud as-is - converting to WAV first will not improve what SoundCloud receives, since you cannot recover quality that is already gone. Always upload your best available source rather than converting up from a lossy file.
Looking to get your track on a SoundCloud channel? Premierely connects artists with channels for premieres and reposts.
Find channels on PremierelyDrop your M4A or AAC files onto the upload area and hit convert. There is no bitrate to choose - this tool always outputs uncompressed 16-bit PCM WAV. Download files individually or as a ZIP.
Yes. iPhone Voice Memos save as M4A. Drop the file in and convert it to WAV for editing in a DAW or audio tool that does not support M4A.
No. M4A (AAC) is a lossy format, so whatever quality was lost during the original AAC encode is permanent. Converting to WAV repackages what remains losslessly - it does not restore lost detail.
Some DAWs, samplers, and older hardware need WAV or do not read M4A at all. Converting gives you a universally compatible, uncompressed file for that workflow.
No. Conversion happens entirely in your browser using the Web Audio API. Your audio never leaves your device.
M4A is a container that usually holds AAC audio. This tool accepts both .m4a and raw .aac files and converts either one to WAV the same way.
Yes. Add as many files as you want, convert them all, and download everything as one ZIP.
100 MB per file. There is no limit on the number of files.
Need MP3 instead? Try the M4A to MP3 converter. The full audio converter handles WAV, MP3, FLAC, OGG, AAC and Opus in one place. Converting MP3 to WAV instead? Use the MP3 to WAV converter. Cut and trim with the MP3 cutter, or add smooth fades with the audio fade tool. Working from WAV? Use the WAV to MP3 converter. Every tool runs free in your browser with no upload.