Which audio formats are supported?

Conversion between MP3, WAV, AAC, FLAC, OGG, M4A, AIFF, and AMR is supported, covering the most common compressed and uncompressed audio formats.

What's the difference between lossy and lossless formats here?

FLAC, WAV, and AIFF are lossless — no audio data is discarded. MP3, AAC, OGG, and AMR are lossy, meaning some audio data is discarded to reduce file size, with quality controlled by the bitrate you choose.

Will converting from a lossy format to a lossless one restore lost quality?

No, converting MP3 to FLAC, for example, doesn't recover audio data that was already discarded during the original MP3 encoding — the file will be larger but won't sound better than the source MP3.

What bitrate should I choose for MP3 or AAC output?

Higher bitrates preserve more audio detail at the cost of a larger file; typical speech content can sound fine at lower bitrates, while music generally benefits from a higher bitrate to avoid noticeable compression artifacts.

Does this use a real audio processing engine?

Yes, conversion runs on a real FFmpeg build compiled to WebAssembly — the same underlying engine widely used in professional audio and video tools — running entirely on your device.

Is my file uploaded to a server?

No. Every operation runs locally in your browser using a real FFmpeg engine compiled to WebAssembly. Your file is never transmitted anywhere.

Convert Audio

Convert between MP3, WAV, AAC, FLAC, OGG, M4A, AIFF, and AMR.

Processed entirely in your browser — your file is never uploaded anywhere.

Why convert audio with Tools Root

Different devices, platforms, and software expect different audio formats — a podcast platform wants MP3, an audio engineer wants lossless WAV, an older device only plays AMR. Converting gets your file into whatever format the destination actually needs.

A real FFmpeg engine, running on your device

Audio processing uses a genuine FFmpeg build compiled to WebAssembly, the same engine used by professional audio and video software, rather than a simplified reimplementation. This means format support and conversion quality match what you'd get from installed desktop software.

Common use cases

Converting a WAV recording to MP3 for smaller file size before sharing, converting AAC voice memos to a more universally compatible format, preparing a lossless FLAC file for a platform that requires MP3, or converting AMR voicemail recordings into a format that plays on more devices.

How to convert an audio file

1Upload your audio file.
2Choose your target format: MP3, WAV, AAC, FLAC, OGG, M4A, AIFF, or AMR.
3Adjust bitrate settings if converting to a compressed format.
4Download your converted audio file.

Frequently asked questions

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