Audio Converter – MP3, WAV, M4A, OGG, FLAC & Opus

Convert audio between MP3, WAV, M4A (AAC), OGG Vorbis, FLAC and Opus — or pull the soundtrack out of a video file. Add several files at once, pick the quality, and download them one by one or as a ZIP. Files are converted on your device with ffmpeg and never uploaded.

How to use it

Choose or drop one or more audio or video files.
Pick the output format, quality (bitrate), channels and sample rate.
Click Convert. The first conversion downloads the converter engine (about 30 MB).
Download each file, or all of them as a ZIP.

Common Use Cases

Turning WAV recordings into smaller MP3s
Making M4A or FLAC files play on older devices
Extracting a soundtrack from a video
Converting a folder of voice memos at once

Frequently Asked Questions

Does converting reduce quality?▼

Converting to a lossy format (MP3, M4A, OGG, Opus) discards some detail; higher bitrates sound closer to the original. WAV and FLAC are lossless, but converting a lossy file to them can't restore lost quality.

Which bitrate should I choose?▼

192 kbps MP3/AAC is a good default for music; 128 kbps is fine for speech. Opus sounds good at lower bitrates (96–128 kbps).

Why is the first conversion slower?▼

The converter engine (about 30 MB) is downloaded on first use and cached by your browser afterwards.

Is there a file size limit?▼

There is no hard limit, but conversion happens in your browser's memory. Files over a few hundred MB may fail, especially on phones.

Can I convert several files at once?▼

Yes. Add as many files as you like; they are converted one after another and can be downloaded together as a ZIP.

Why use this tool?

Six output formats including lossless FLAC and WAV
Adjustable bitrate, mono/stereo and sample rate
Batch conversion with ZIP download
Extracts audio from MP4, MOV and WebM video
Private: files never leave your device

Privacy & Security

Conversion runs locally in your browser using ffmpeg compiled to WebAssembly. Your files are not uploaded to any server.

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How was this tool?

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Have further opinions? Email me at hello@everythingbagel.app