WAV to M4A for Email
Email attachments have size limits — usually 25MB. WAV files are way too big for email. Convert to M4A to shrink them down and send without issues.
Drop your WAV file here or click to browse
WAV (.wav) · Max 20 MB
Gmail, Outlook, and Yahoo all cap attachments at 25MB. A single WAV file often exceeds that within minutes of audio. Converting to M4A at 128kbps keeps file sizes well under the limit.
For voice recordings and meetings, 128kbps mono is plenty. For music, 192kbps stereo sounds great and stays small. AudioUtils converts in your browser — no upload needed, no file touching anyone's server.
Drop your file, convert, download, attach. The whole process takes seconds. No signup, no email address required, no watermarks.
Frequently Asked Questions
How much smaller is M4A compared to WAV?
About 85-90% smaller. A 50MB WAV file becomes roughly 5-7MB as M4A at 256kbps AAC.
Is M4A or MP3 better for quality?
M4A (AAC) is better. At the same bitrate, AAC delivers noticeably superior audio quality compared to MP3.
Will my WAV metadata transfer?
Basic metadata (title, artist, album) transfers when available. M4A actually has better metadata support than WAV, including album art.
Can I use M4A in video editing?
Yes. M4A is the audio-only version of the MP4 container. Most video editors accept it directly.
About WAV
Uncompressed audio format. Perfect quality with no data loss. Standard for music production and professional audio work.
About M4A
Apple's preferred audio format. Better quality than MP3 at same bitrate. Default for iTunes and Apple devices.