Are my audio files uploaded to a server?

No. Every tool here decodes and re-encodes audio entirely in your browser using the Web Audio API and WebAssembly. Your files never leave your device, which is why the tools also keep working offline once the page has loaded.

Which formats can I convert between?

You can read MP3, WAV, M4A/AAC, OGG, and FLAC, and write MP3, WAV, OGG (Vorbis), or FLAC. That covers the vast majority of everyday audio conversions, from shrinking a WAV to making an iPhone M4A play on any device.

What is the difference between lossy and lossless?

Lossy formats (MP3, OGG) discard some audio data to make small files; quality depends on the bitrate. Lossless formats (WAV, FLAC) keep everything, so they sound identical to the source but are larger. Use lossy for sharing, lossless for archiving or editing.

Can I convert or trim more than one file at a time?

The converters support batch conversion and can download the whole set as a single zip. The trimmer works on one file at a time so you can set a precise start and end for each clip.

Do I need to install anything or sign up?

No. Every tool is free with no login and no software to install. Open a tool in any modern browser and start converting or trimming immediately.

Free Audio Converter and Editing Tools

Convert, trim, and re-format audio between MP3, WAV, OGG, and FLAC. All in your browser, nothing uploaded.

Everything you need to change an audio file from one format to another, or cut it down to the part you want, in one place. These free tools convert between the formats people actually deal with (MP3, WAV, M4A, AAC, OGG, and FLAC) and let you trim a clip without any editing software. What sets them apart from most online converters is that nothing is uploaded: every file is decoded and re-encoded inside your browser using WebAssembly, so private recordings and music stay on your device. That also means the tools keep working even if your connection drops.

Convert any audio file

Start with the all-in-one Audio Converter if you are not sure which tool you need; it reads MP3, WAV, M4A, AAC, OGG, and FLAC and writes MP3, WAV, OGG, or FLAC, with batch conversion and a download-all option.

Audio Converter

Convert audio between MP3, WAV, OGG and FLAC in your browser. No upload, no signup.

Convert a specific format

If you know exactly what you want, use a direct converter. MP3 to WAV gives you an uncompressed editing copy; WAV to MP3 shrinks a large recording; M4A to MP3 makes iPhone and iTunes audio play anywhere; the FLAC tools handle lossless libraries; and MP3 to OGG produces an open-format file for games and the web.

MP3 to WAV Converter

Convert MP3 to uncompressed WAV in your browser. Free, no upload, no signup.

WAV to MP3 Converter

Convert WAV to MP3 in your browser and choose the bitrate. Free, no upload, no signup.

M4A to MP3 Converter

Convert M4A or AAC audio to MP3 in your browser. Free, no upload, no signup.

FLAC to MP3 Converter

Convert lossless FLAC to MP3 in your browser and pick the bitrate. Free, no upload.

WAV to FLAC Converter

Convert WAV to lossless FLAC in your browser to save space with no quality loss.

MP3 to OGG Converter

Convert MP3 to OGG (Vorbis) in your browser. Free, no upload, no signup.

Trim and cut audio

To keep only part of a file, use the Audio Trimmer. Pick a start and end point on the waveform and export the selection as MP3, WAV, OGG, or FLAC, ideal for ringtones, clips, and cutting dead air off a recording.

Audio Trimmer and Cutter

Trim or cut an audio file to a start and end point in your browser. Free, no upload.

Which tool should I use?

I just need to change the format and I am not sure which tool: Use the Audio Converter. Pick your output (MP3, WAV, OGG, or FLAC) and it handles the rest, including converting several files at once.
I have a big WAV and need something small to share: Use WAV to MP3 and choose a bitrate; 192 kbps is a good balance of size and quality for most audio.
I want a lossless copy to archive: Use WAV to FLAC. FLAC compresses without losing any quality, so it is smaller than WAV but sounds identical.
I only want a short section of a track: Use the Audio Trimmer. Set the start and end on the waveform and export just that part.

Related guides

Frequently asked questions

Are my audio files uploaded to a server?: No. Every tool here decodes and re-encodes audio entirely in your browser using the Web Audio API and WebAssembly. Your files never leave your device, which is why the tools also keep working offline once the page has loaded.
Which formats can I convert between?: You can read MP3, WAV, M4A/AAC, OGG, and FLAC, and write MP3, WAV, OGG (Vorbis), or FLAC. That covers the vast majority of everyday audio conversions, from shrinking a WAV to making an iPhone M4A play on any device.
What is the difference between lossy and lossless?: Lossy formats (MP3, OGG) discard some audio data to make small files; quality depends on the bitrate. Lossless formats (WAV, FLAC) keep everything, so they sound identical to the source but are larger. Use lossy for sharing, lossless for archiving or editing.
Can I convert or trim more than one file at a time?: The converters support batch conversion and can download the whole set as a single zip. The trimmer works on one file at a time so you can set a precise start and end for each clip.
Do I need to install anything or sign up?: No. Every tool is free with no login and no software to install. Open a tool in any modern browser and start converting or trimming immediately.