Convert Audio: auto-detect your input and convert to any other format

Drop up to 10 audio files. BlowFix reads the input format automatically, then shows every format you can convert to. Choose MP3, AAC, OGG, Opus, WebM, QOA, WAV, AIFF, CAF, FLAC, ALAC, or WavPack, set bitrate, sample rate, and channels, and download individually or as one ZIP. Everything runs in your browser: your audio never leaves your device. Every output is stamped with blowfix.com metadata.

Drop your audio files here or click to browse

Any audio the browser can decode: MP3, WAV, OGG, FLAC, AAC, M4A, OPUS, AIFF, WebM - Max 50 MB and 30 minutes per file

Up to 10 files. The input format is detected automatically and the matching output format is hidden.

Converting...

Files 0

No files yet. Add audio files to start converting.

Add files to get started.

Detected Input

Output Format

Choose any format except the one you uploaded.

Quality

Sample Rate

Keep uses the rate the file decoded at. 44.1 kHz is standard for music. 48 kHz is standard for video.

Channels

Mono halves the file size for voice. Stereo keeps the full soundstage.

About Formats

Input is detected automatically.
The output grid hides the format you uploaded, so you cannot accidentally convert MP3 to MP3. Lossy formats are smaller; lossless formats preserve every sample.