Audio Format Converter

Input: MP3, WAV, FLAC, OGG, M4A, AAC, AIFF, OPUS, WMA, WebM, and MP4 (audio extracted from video). Output: MP3 at 128, 192, 256 or 320 kbps or V0, or WAV at 16 or 24 bits or as 32-bit float.

Audio is chunked into 1152-sample frames and encoded at your chosen bitrate. Higher bitrates (256-320 kbps) preserve more detail; 128 kbps is smaller but loses high-frequency content.

Yes. MP4, WebM, and MKV files are decoded on your device for their audio track only. The audio is then encoded to your chosen output format. No video processing happens — only the audio stream is used.

Converting to MP3 is lossy — some audio data is permanently discarded. Converting to WAV adds no compression loss but produces larger files; a 24-bit source stays 24-bit, and 16-bit and lossy sources are written at 16 bits with dither. Converting from one lossy format to another (e.g., OGG to MP3) compounds quality loss. For best results, start from a lossless source.

Up to 30 minutes per file. MP3 is written at 44.1 kHz when the source rate is 11.025 kHz times a power of two (22.05, 44.1, 88.2 or 176.4 kHz, for example) and at 48 kHz for every other rate; WAV keeps the source's rate.

No. All decoding and encoding runs entirely on your device. Your files never leave your machine — there are no server costs, which is why it's free.