Drop an audio file here, or click to choose
MP3, WAV, M4A, AAC, or OGG → convert to MP3 or WAV
How the Audio Converter works
This tool decodes your audio and re-encodes it using your browser’s own audio engine plus an open-source MP3 encoder — entirely on your device. Nothing is uploaded to a server — your audio never leaves your browser.
Best for
- Converting an iPhone voice memo (M4A) to MP3 for wider compatibility
- Converting WAV recordings down to MP3 for smaller, shareable files
- Getting a lossless WAV from a compressed MP3 source for editing
Good to know
- Converting into M4A/AAC isn’t supported — there’s no clean, lightweight, freely licensed encoder for that format in the browser, so this tool only outputs MP3 or WAV
- Which source formats decode successfully depends on your browser’s built-in audio support, which covers MP3, WAV, M4A, AAC, and OGG in virtually all modern browsers
- Very large files take longer since encoding runs on your device rather than a server
Frequently asked questions
Can it convert to M4A or AAC?
No — there’s no clean, freely licensed encoder for that format in the browser, so output is limited to MP3 or WAV.
What’s the difference between MP3 and WAV output?
WAV is uncompressed and lossless but larger; MP3 is compressed and much smaller, with a bitrate you can choose (128, 192, or 320kbps).
Is there a file size or length limit?
No hard limit, though very large files take longer to process since everything runs on your device rather than a server.
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