Audio Tools
Audio Converter
Convert audio between MP3, WAV, OGG, FLAC, AAC, and OPUS formats with bitrate and sample rate control.
Drop audio file or click to upload
MP3, WAV, OGG, FLAC, AAC, M4A, WebM, OPUS, WMA
Your audio files are processed in your browser. Nothing is uploaded to any server.
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About Audio Converter
OptiPix Audio Converter transforms audio files between all major formats directly in your browser. Convert MP3, WAV, OGG, FLAC, AAC/M4A, WMA, AIFF, WebM, OPUS, and AMR files to your desired output format. Control bitrate (64-320 kbps), sample rate (22050-48000 Hz), and channels (mono/stereo). Batch convert multiple files at once. Uses FFmpeg.wasm for professional-grade encoding with no quality loss beyond the target format's characteristics. Estimated output file size shown before conversion. All processing happens locally — your audio files never leave your device.
How It Works
The converter uses FFmpeg.wasm to decode your input audio and re-encode it in the target format with your specified bitrate, sample rate, and channel settings. All processing runs locally in your browser.
Use Cases
- •Convert FLAC to MP3 for portable devices
- •Convert WAV to OGG for web embedding
- •Reduce file size by converting to a lossy format
- •Convert podcast audio to different distribution formats
- •Extract compatible audio for video editing software
Frequently Asked Questions
What audio formats are supported?
Can I control the bitrate?
Can I convert to mono?
Is my audio uploaded?
Can I batch convert?
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