Audio Converter
An audio converter changes a sound file from one codec or container into another, like M4A to MP3 or FLAC to WAV. FileFlip runs the conversion in your browser, so the recording stays on your machine.
Every one of them runs in the browser, on this page, with no upload and no account.
Popular audio conversions#
Every audio format FileFlip supports#
FileFlip reads 4 of these without writing them, so they work as a source and not as a target.
| Format | What it is | Convert |
|---|---|---|
| aacAAC | raw ADTS AAC (Advanced Audio Coding) | Convert AAC |
| ac3AC3 | Audio Coded 3 | Convert AC3 |
| apeAPE | Monkey's Audio | Convert APE |
| aiffAIFF | Audio Interchange File Format | Convert AIFF |
| amrAMR | Adaptive Multi-Rate | Convert AMR |
| auAU | Sun AU | Convert AU |
| cafCAF | Apple CAF (Core Audio Format) | Convert CAF |
| flacFLAC | Free Lossless Audio Codec | Convert FLAC |
| m4aM4A | MPEG-4 Audio | Convert M4A |
| mp3MP3 | MPEG Audio Layer III | Convert MP3 |
| ogaOGA | Ogg Audio | Convert OGA |
| oggOGG | Ogg Audio | Convert OGG |
| ttaTTA | True Audio | Convert TTA |
| vocVOC | Creative Voice File | Convert VOC |
| wavWAV | Waveform Audio File Format | Convert WAV |
| xwmaXWMA | Xbox Waveform Audio | Convert XWMA |
How audio conversion works here#
Two engines sit behind this. Where your browser can already decode and encode the formats involved, mediabunny drives the built-in WebCodecs API and there is nothing to download at all. Everything else falls through to FFmpeg compiled to WebAssembly, a 32.3 MB module your browser caches after the first use.
Converting one lossy format into another re-encodes the audio and loses a little each time, so MP3 to AAC and back is not free. Converting a lossy file into FLAC or WAV makes it much larger without recovering anything that was already thrown away, which is worth knowing before doing it to a whole library.
Every engine, its exact version and its download size are listed on how FileFlip works, along with how to check for yourself that nothing is uploaded.
Other converters#
The conversion index lists the other eight families and the conversions people ask for most in each of them.