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Audio Converter

Your audio never leaves your device
Drop an audio file here or click to browse MP3, WAV, FLAC, OGG, AAC, M4A, WMA, WebM

How to Convert Audio Files Online

  1. 1

    Drop your audio files

    Drag and drop one or more audio files onto the upload area, or click to browse. MP3, WAV, FLAC, OGG, AAC, and M4A are all accepted.

  2. 2

    Choose the output format and quality

    Select the target format from the grid. For lossy formats (MP3, OGG, AAC, M4A) use the quality slider to balance file size and audio quality.

  3. 3

    Convert and download

    Click "Convert" to start. Each file is processed in your browser and ready to download individually as soon as it finishes.

Audio Format Guide

MP3 Lossy

The universal standard. Plays everywhere — phones, cars, smart speakers, web. Small file size with good quality at 192 kbps and above. Best for everyday sharing.

WAV Lossless

Uncompressed audio with no quality loss. Large files (10× bigger than MP3). Use for audio editing, professional workflows, or when you need a lossless original.

FLAC Lossless

Lossless compression — smaller than WAV but identical quality. Ideal for archiving music or high-fidelity listening on FLAC-capable devices and apps.

OGG Lossy

Open-source format with good quality at lower bitrates. Common in games and web audio. Less compatible with consumer devices than MP3.

AAC Lossy

Apple's successor to MP3. Better quality than MP3 at the same file size. Default format for iTunes, iPhone, and YouTube. Widely supported.

M4A Lossy

AAC audio inside an MPEG-4 container. Functionally identical to AAC. Used by Apple devices and iTunes. Better compatibility with Apple hardware than plain AAC.

Frequently Asked Questions

Does my audio get uploaded to a server?
No. All conversion happens entirely in your browser using WebAssembly. Your audio files never leave your device and are never sent to any server.
Will I lose quality when converting?
Converting between lossy formats (MP3, OGG, AAC, M4A) always involves some quality loss. To minimise this, use the quality slider and choose the highest setting your file size allows. Converting from a lossless source (WAV or FLAC) to MP3 at high quality is the best approach. Converting WAV to FLAC involves no quality loss — both are lossless.
How many files can I convert at once?
There is no hard limit on batch size, but files are processed one at a time (ffmpeg.wasm is single-threaded). Very large batches or very large files may take longer. For best results, keep individual files under 500 MB.
Which format should I choose?
MP3 is the universal choice — compatible with every device and platform. AAC or M4A gives slightly better quality at the same file size and works on Apple devices. OGG is ideal for open-source projects. WAV or FLAC are lossless and suited for audio editing or archival — they produce large files. Use MP3 or AAC for everyday sharing.
Can I convert FLAC to MP3?
Yes. FLAC is a lossless format so converting to MP3 will produce a smaller file at the cost of some audio data. Set the quality slider high (80–100%) to preserve as much quality as possible.