WAV to M4A without an upload
AAC at 256 kbps: better sound per megabyte than MP3, native on every Apple device, fine everywhere else.
Runs in your browser. Your file never leaves your computer.
- QualityNear-transparent at 256 kbps
- Typical sizeAbout a fifth of the WAV
- Best onApple devices; plays everywhere
- Our default256 kbps AAC
M4A is the modern answer to the question MP3 used to answer: how do you make audio small enough to carry everywhere? Its AAC encoding is simply better engineering than MP3, so at the same bitrate it sounds cleaner, and at 256 kbps almost nobody can tell it from the WAV. iPhones, iPads and Macs treat it as their native format, and Android, Windows and browsers all play it. The conversion happens on your machine, with trim available.
Questions
Is M4A better than MP3?
At the same bitrate, yes: AAC is a newer codec and wastes fewer bits. The one thing MP3 still wins is playing on genuinely ancient hardware.
Will an M4A play outside Apple devices?
Yes. Android, Windows, Linux players and every browser handle M4A. The Apple association is about defaults, not exclusivity.
Can I pick a different bitrate?
Yes, under More options: 128 for speech, 192 as a middle ground, 256 as the default, 320 for headroom.
Is anything sent to a server?
No. The encoding runs in your browser and the M4A is saved straight to your disk.
Related conversions
- M4A to WAVPlain PCM out of an AAC file, for the tool in your chain that wants WAV and nothing else.
- WAV to MP3Turn a large studio recording into a small file that plays anywhere, at a bitrate where almost nobody can hear the difference.
- WAV to FLACFLAC keeps every sample of the recording and still cuts the file roughly in half. The archive format for audio you may need again.
- WAV to OGGThe most efficient codec in wide use: transparent around 128 kbps, ideal for the web and for apps, weaker on Apple hardware.
- Audio equalizerA six-band EQ you play with: drag the curve, hear the change live, A/B against the original, then save as WAV or a smaller format. The file stays on your computer.
- Bass boosterA clean low-shelf lift below 90 Hz with a limiter guarding the peaks: fuller low end, no clipping. Starts gentle at +3 dB; drag the curve for more. Works on MP3, WAV, FLAC, M4A and OGG.
- Audio limiterA lookahead limiter, live in your browser: add up to 24 dB of gain while every peak stops at the ceiling you set. In plain words — a volume booster that can't distort. Nothing is uploaded.
Part of convert audio files in your browser. Every other conversion is on the conversions index.