WAV → M4A
Encodes WAV PCM to M4A AAC, cutting size by about 80% for distributing recordings and spoken content on iPhone and iPad.
Drag files here or click to upload (multiple files supported)
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How to convert WAV to M4A
- 1Upload your WAV file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted M4A file.
About WAV to M4A conversion
WAV is an audio format of uncompressed linear PCM encapsulated in the RIFF container, and is the standard intermediate format for audio editing. Its file size is about 10 times that of AAC-encoded M4A with the same content. M4A is a MPEG-4 Part 14 audio container, usually encapsulating AAC encoding, and is the default audio format for iTunes and Apple devices, suitable for storage and playback.
This conversion converts uncompressed WAV to M4A encapsulating AAC encoding. The output AAC bitrate supports adjustment in the range of 64kbps to 320kbps. The ID3 metadata tags of the original file are retained. The original multi-channel configuration and sampling rate remain unchanged after conversion, and the file size is greatly reduced.
The converted M4A can be used directly on all Apple devices and iTunes software, suitable for replacing the original WAV for personal music library storage and mobile playback. It is not recommended for use as intermediate material in audio editing workflows.
WAV vs M4A: technical comparison
| Feature | WAV | M4A |
|---|---|---|
| Released | 1991 | 2001 |
| Developer | Microsoft / IBM | Apple / MPEG |
FAQ about WAV → M4A
Will audio quality decrease after conversion
When selecting 320kbps AAC encoding, the audible difference is not noticeable in most scenarios; below 128kbps, perceptible quality loss will occur. This conversion is processed based on FFmpeg and complies with encoding technical standards.
Will the original WAV metadata be retained
The ID3 metadata tags carried by the original WAV will be retained, including song name, artist, album information and other content, which will be written into the generated M4A file after conversion.
What is the maximum single file size limit
This site only converts one file at a time, and the maximum single file size is 50MB. Files exceeding the limit cannot be submitted for processing, please split the file before conversion.
Will you store my files
No. Conversion is completed on the server side, files are uploaded via HTTPS, and the server immediately deletes the source file and output file after conversion is completed, without any storage.