Audio Converter

Why convert audio files?

Different devices and platforms expect different audio formats. An MP3 works almost everywhere but is a lossy compression, meaning some audio detail is permanently discarded. WAV preserves full quality but creates large files. OGG and AAC offer good compression with less quality loss than MP3 at the same bitrate. FLAC is lossless - it compresses without discarding data, producing files roughly half the size of WAV with identical quality. M4A is the container format commonly used by Apple devices.

Choosing a bitrate

When converting to MP3, the bitrate controls how much data is allocated per second of audio. 128 kbps is acceptable for speech and casual listening. 192 kbps is a reasonable default for music. 256 kbps is difficult to distinguish from the original in blind tests. 320 kbps is the maximum for MP3 and is functionally transparent for most listeners. Higher bitrates mean larger files.

How this tool works

This converter uses ffmpeg.wasm, a full build of the ffmpeg audio/video processing library compiled to WebAssembly. When you click Convert, the file is processed entirely within your browser - nothing is uploaded to any server. The converted file is generated in memory and offered as a download.

Privacy

Your audio files never leave your device. All processing happens locally in your browser using WebAssembly. No data is transmitted to any server.