What is an audio file converter?
An audio file converter changes sound files from one format to another — for example WAV recordings into small MP3s, or iPhone M4A memos into files any player accepts. This converter handles AAC, AIFF, FLAC, M4A, MP3, WAV, and WMA input, entirely in your browser with no uploads.
How to use the Smart Convert Pro audio converter
- Choose your source format, or just drag and drop your audio files (up to 50 MB each).
- Pick the output format: AAC, AIFF, FLAC, M4A, MP3, OGG, or WAV.
- Press Convert — the audio is processed locally on your device.
- Download each converted file, or save everything at once with Download all.
Why convert audio with Smart Convert Pro
- Seven output formats — Convert between AAC, AIFF, FLAC, M4A, MP3, OGG, and WAV from a single page.
- 100% private — Recordings are converted in your browser and never uploaded to a server.
- Free and unlimited — No account, no watermark, and no daily conversion caps.
- Batch friendly — Queue several files and convert them together in one click.
Frequently asked questions
Which audio formats are supported?
Input: AAC, AIFF, FLAC, M4A, MP3, WAV, and WMA. Output: AAC, AIFF, FLAC, M4A, MP3, OGG, and WAV — covering nearly every everyday conversion.
Is the audio converter free?
Yes, completely free with no signup and no limits on the number of files you convert.
Are my audio files uploaded to a server?
No. Smart Convert Pro converts audio entirely in your browser, so recordings never leave your device.
What's the maximum file size?
Each audio file can be up to 50 MB — enough for long voice recordings and full-length tracks — and you can convert several in one batch.
Does converting audio reduce quality?
Converting to lossless formats like WAV, AIFF, or FLAC keeps the audio unchanged. Converting between compressed formats like MP3 and AAC re-encodes the sound, but at normal bitrates the difference is not audible.