Audio Converter

Convert audio files between MP3, WAV, OGG, AAC and FLAC instantly — runs entirely in your browser.

No files are stored on our servers

Drop an audio file or click to browse

MP3, WAV, OGG, AAC, FLAC, M4A

How to use

1
Upload an audio file by dropping it or clicking to browse — MP3, WAV, OGG, AAC, FLAC, or M4A.
2
Select the target format. A badge shows the best use case for each format.
3
Click Convert, preview the result in the built-in player, and download the file.

Free Audio Converter — MP3, WAV, OGG, AAC, FLAC Online, No Upload

Convert audio files between MP3, WAV, OGG, AAC, and FLAC instantly in your browser. Free, no signup, no server upload — powered by FFmpeg WebAssembly.

Skycally's Audio Converter lets you convert any audio file between five popular formats — MP3, WAV, OGG, AAC, and FLAC — directly in your browser. Upload your file, select the target format, click Convert, preview the result in the built-in audio player, and download. No server upload, no account, no waiting in queues.

Choosing the right audio format depends on your use case. MP3 is the most universal format and works on every device, app, and platform. AAC offers better audio quality at the same file size and is the standard for Apple devices, YouTube, and Spotify. OGG is an open-source format with excellent compression used by games and web apps. WAV and FLAC are lossless formats that preserve every detail of the original audio — ideal for music production, podcasting, and archiving.

All conversion runs locally using FFmpeg WebAssembly — the same powerful engine used by professional video editors, compiled to run entirely in your browser tab. Your audio file never leaves your device, making this tool completely private. There is no file size limit enforced by a server and no data sent to any third party.

After conversion, a built-in audio player lets you preview the result before downloading, and a size comparison shows exactly how much the file size changed. Lossless-to-lossy conversions (like WAV to MP3) typically reduce size by 60–80%, while lossless-to-lossless (like WAV to FLAC) reduce size by 20–40% with zero quality loss.

Frequently Asked Questions

What audio formats can I convert to?

You can convert to MP3, WAV, OGG, AAC, and FLAC. Each format is suited to different use cases — MP3 for universal compatibility, AAC for streaming, WAV/FLAC for lossless quality.

What input formats are supported?

Most audio formats are supported including MP3, WAV, OGG, AAC, FLAC, M4A, and MP4 (audio track). FFmpeg handles a wide range of codecs and containers.

Is my audio file uploaded to a server?

No. All conversion runs locally in your browser using FFmpeg WebAssembly. Your file never leaves your device.

Does converting audio reduce quality?

Converting from a lossless format (WAV, FLAC) to a lossy format (MP3, AAC, OGG) involves some quality reduction. Converting between two lossless formats preserves full quality. Re-encoding an already-lossy file (MP3 to AAC) may cause minor additional quality loss.

Which format should I choose?

MP3: universal, works everywhere. AAC: best for streaming and Apple devices. OGG: open-source, great for games and web apps. WAV: uncompressed lossless, best for editing. FLAC: compressed lossless, best for archiving.