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Free Online Audio Converter

Convert audio on your device without uploading it. Choose an input and output format below, or open a popular converter for bitrate, sample-rate, and channel controls.

No file uploads Batch conversion Bitrate and sample-rate controls Private browser processing

Popular audio conversions

Open a focused converter with settings chosen for that format pair.

WAV to MP3Shrink uncompressed audio for sharing, playback, and podcasts.Open converter →FLAC to MP3Create a compact MP3 copy from a lossless music file.Open converter →M4A to MP3Improve compatibility with players, cars, and older devices.Open converter →OGG to MP3Convert OGG audio to the most widely supported music format.Open converter →MP3 to WAVDecode MP3 audio to uncompressed WAV for editing.Open converter →WAV to FLACReduce storage while preserving audio losslessly.Open converter →AAC to MP3Make AAC recordings easier to play and share.Open converter →Opus to MP3Convert efficient Opus audio for wider playback support.Open converter →

Choose the right audio format

MP3

The safest choice for broad playback support and compact music or speech files.

WAV

Uncompressed audio for editing and production. Quality is high, but files are large.

FLAC

Lossless compression for music libraries and archives without WAV-sized files.

AAC / M4A

Efficient audio commonly used by Apple devices, phones, podcasts, and streaming.

OGG / Opus

Efficient open formats for web audio, voice, and modern applications.

How browser conversion works

  1. Choose a conversion. Pick the source and output formats or open a popular converter.
  2. Add and adjust. Select one or more files and change the optional quality or format settings.
  3. Convert and download. Processing stays on your device; download each result or a batch ZIP.

Private, on-device processing

Audio decoding and encoding run through FFmpeg WebAssembly in this browser. The engine loads only when needed. Selected recordings are not uploaded or stored, and results disappear when you close or leave the page.

Frequently asked questions

Are my audio files uploaded?

No. Audio conversion runs locally through a browser-based conversion engine.

Does converting MP3 to WAV improve quality?

No. WAV avoids further compression, but it cannot restore detail already removed from the MP3.

Which settings should I use?

The defaults suit most files. For MP3 music, 192 kbps or higher is a practical choice; use mono for speech when a smaller file matters.