Audio Converter

About the Audio Converter

The TConverter Audio Converter changes audio files between nine formats: MP3, WAV, AAC, OGG (Vorbis), FLAC, M4A (AAC), OPUS, AIFF and WMA. Any of them can be converted to any other, and .aif files are accepted as input as well. You can turn a large WAV recording into a compact MP3, make an M4A for an iPhone or a music library, create an OPUS file for voice and web use, or produce an AIFF or WAV copy for an audio editor or a video project.

Each format has its own strengths. MP3 plays almost everywhere and keeps files small. AAC and M4A offer good quality at small sizes and are common on phones and streaming services. OGG Vorbis and OPUS are open formats popular in games, web apps and voice recordings. WMA is still found in older Windows libraries. WAV and AIFF store uncompressed audio and are the usual choice for editing software, while FLAC compresses audio without losing any quality, which makes it a good option for archiving music.

For lossy formats (MP3, AAC, OGG, M4A, OPUS and WMA) you can choose the bitrate under Quality (bitrate). Automatic uses FFmpeg's default for the selected format, and you can also pick 128, 192, 256 or 320 kbps. A higher bitrate means better sound and a larger file. Lossless formats have no bitrate setting: WAV is written as 16-bit PCM and AIFF as 16-bit big-endian PCM, and FLAC keeps every sample exactly. M4A files are written with their metadata at the start, so they can start playing before they have fully downloaded.

Keep in mind that converting a lossy file such as an MP3 to a lossless format such as WAV or FLAC does not bring back detail that was removed during the original compression. The new file will be larger, but it will not sound better than the source. Embedded cover art (album art) is not kept in the output; only the audio itself is converted.

Conversion runs on the TConverter server with FFmpeg, the widely used open-source audio and video engine, and jobs are processed in a queue. A progress bar shows the real progress, and the converted file downloads automatically when it is ready; a Download button is there too. The output keeps your original file name with the new extension, so song.wav becomes song.mp3. The maximum file size is 50 MB, which is enough for most songs, podcasts and voice recordings.

Your file is uploaded over an encrypted HTTPS connection. The uploaded file and the converted file are deleted automatically within minutes, and a periodic cleanup removes anything left behind. Files are never shared. The converter is free and works without sign-up.