Audio Converter
Convert audio files between MP3, WAV, OGG, M4A and FLAC instantly in your browser. Free, no signup, works in your browser.
Everything runs inside your browser — your file is never uploaded to a server.
First run downloads the media engine (~30 MB) once, then it stays cached.
About this tool
This audio converter switches your files between MP3, WAV, OGG, M4A and FLAC directly on your device. Drop in a podcast recorded as WAV and export it as a 128kbps MP3 for smaller uploads, or turn a compressed M4A voice memo into lossless FLAC for archiving. You choose the target format and, where relevant, the bitrate or sample rate, and an FFmpeg build compiled to WebAssembly handles the actual decoding and re-encoding right inside the page. Because nothing leaves your device, large music libraries and sensitive recordings stay private. The first conversion downloads the FFmpeg engine once, after which repeat conversions start instantly from cache, making this a practical everyday tool for musicians, podcasters and anyone juggling mismatched audio formats.
How to use this tool
1. Choose your audio file
Select or drag in the MP3, WAV, OGG, M4A or FLAC file you want to convert.
2. Pick the output format
Choose the target format and, if needed, adjust bitrate or sample rate.
3. Run the conversion
Click convert and let the in-browser FFmpeg engine process the file.
4. Download the result
Save the newly converted audio file straight to your device.
Why use this tool
Audio formats rarely match what you actually need: a video editor wants WAV, a podcast host wants MP3, an archivist wants FLAC. This converter handles every common swap without installing desktop software or trusting a third-party upload service, keeping your files private while giving you full control over format and quality.
Tips & best practices
- Keep a lossless master (WAV or FLAC) and only export lossy MP3/OGG copies for distribution.
- Match the sample rate to your project — 44.1kHz for music, 48kHz for video work.
- Batch similar files together so you only wait once for the FFmpeg engine to load.
Common use cases
- Turning a WAV podcast recording into MP3 for hosting platforms.
- Converting FLAC music rips to M4A for older devices.
- Preparing OGG audio for web games from a WAV source.
- Archiving compressed voice memos as lossless FLAC.
- Standardizing a mixed-format sound library to a single codec.
Frequently asked questions
Will converting MP3 to FLAC improve quality?
No. MP3 is lossy, so once the original detail is discarded it cannot be recovered by converting to a lossless container like FLAC. Convert from the original lossless source whenever possible.
What bitrate should I choose for MP3 output?
192kbps is a good balance of size and quality for music, while 128kbps is usually fine for spoken word like podcasts and interviews.
Is there a file size limit?
There's no hard cap, but very large files rely on your device's CPU and RAM, so files up to a few hundred megabytes convert most comfortably.
Does this work on mobile phones?
Yes, the converter runs in any modern mobile browser, though large files will take longer on phone hardware than on a desktop.
Are my audio files uploaded to a server?
No, every conversion happens locally in your browser using WebAssembly FFmpeg, so your files never leave your device.
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