Convert WAV to M4A Online

Convert uncompressed WAV audio to M4A (AAC). Reduce file size by 80% while keeping excellent quality. Free, no software needed. Up to 100 MB.

256-bit SSL 500K+ conversions 4.9 rating Files auto-deleted in 2h

Tap to choose your WAV file

or

Also supports MP3, FLAC, OGG, AAC, AIFF, WMA • Max 100 MB

Your files are secure. All uploads encrypted via HTTPS. Files automatically deleted from our servers within 2 hours.

How to Convert WAV to M4A

1

Upload

Drag and drop your WAV file into the converter above, or click Choose WAV File to browse your device.

2

Convert

Click Convert to M4A. Our server processes your file and creates the M4A output.

3

Download

Click Download M4A to save the converted file. That's it — no registration, no email required.

What is WAV?

WAV (Waveform Audio File Format) stores uncompressed PCM audio, the raw digital representation of sound. Created by Microsoft and IBM in 1991, WAV is the standard for audio recording and editing.

WAV files are large — roughly 10 MB per minute at CD quality. While perfect for editing, they are impractical for portable listening, streaming, or storage of large music libraries.

What is M4A?

M4A is an audio file format that uses the AAC (Advanced Audio Coding) codec inside an MPEG-4 container. Developed as the successor to MP3, AAC delivers better quality at the same bitrate — or equal quality at smaller file sizes.

M4A is the native audio format for Apple devices (iPhone, iPad, Mac, Apple Music, iTunes). It is also supported by Android, Windows, and all modern browsers. M4A/AAC at 256 kbps is considered transparent quality for most listeners.

Frequently Asked Questions

M4A uses AAC lossy compression, so there is some quality reduction. However, at 256 kbps AAC, the difference from the original WAV is inaudible to most listeners in blind tests. AAC is considered transparent at this bitrate.
M4A (AAC) files are typically 80-90% smaller than WAV. A 50 MB WAV file (5 minutes) becomes approximately 5-8 MB as M4A at 256 kbps, with no perceptible quality difference.
M4A plays natively on iPhone, iPad, Mac, Apple Music, iTunes, Android, Windows Media Player, VLC, and all modern web browsers. It is one of the most widely supported audio formats.
Yes. Convertio.com offers free WAV to M4A conversion with no watermarks, no registration, and no email required. Files are encrypted and auto-deleted within 2 hours.

Related Conversions

WAV to MP3 M4A to MP3 FLAC to MP3 MOV to WAV OGG to MP3