YOUR AUDIO. YOUR DEVICE.
Free MP3 Converter
Use our Free MP3 Converter to turn audio and video into MP3. Choose your quality, listen to the result, and keep your files on your device.
One file at a time · Up to 200 MiB. On mobile, start with files under 50 MiB. Speed and memory limits depend on your device.
- Free to use
- No signup
- No file uploads
Why use our Free MP3 Converter?
- Keep your recordings private
- Our Free MP3 Converter processes files in your browser with ffmpeg.wasm. Your recordings stay on your device throughout conversion.
- Make formats work together
- Turn a WAV recording, a FLAC track or an M4A voice memo into an MP3 for players, presentations and sharing.
- Choose the size–quality balance
- Use 64 kbps for compact speech files or up to 320 kbps for a higher bitrate. You choose the trade-off.
- Extract audio from video
- Select a video to convert its first audio track to MP3. Silent videos cannot produce an audio file.
How to use the Free MP3 Converter
Choose an audio or video file
Add an audio or video file to the Free MP3 Converter by dragging it into the box or selecting it from your device. No account is needed.
Set your audio quality
Keep the 192 kbps default or choose another bitrate. Open advanced settings to change the sample rate or switch between mono and stereo.
Convert, listen and download
Select Convert to MP3. When it finishes, preview the result and download the MP3 before closing the page.
Supported files and output
- Audio input
- MP3, WAV, FLAC, M4A, AAC, OGG, OPUS, WMA, AIFF
- Video input
- MP4, MOV, WebM, MKV, AVI, M4V
- Output
- MP3 · 64–320 kbps
- Sample rate
- Automatic, 44.1 kHz or 48 kHz
File extensions describe containers, not every codec inside them. Some files may not decode. Only the first audio track is converted; cover artwork and video are excluded.
Which MP3 bitrate should you choose?
Start with 192 kbps in the Free MP3 Converter for a balance of size and sound. 64 kbps suits speech when a small file matters most; 128 kbps keeps everyday recordings compact. 256 and 320 kbps allow a higher bitrate for music. MP3 uses lossy compression: converting from WAV or FLAC discards some detail, and re-encoding an MP3 can reduce quality again. A higher setting does not improve a low-quality source.
Frequently asked questions
Does the Free MP3 Converter require an account?
No. Our Free MP3 Converter lets you convert and download without an account or credits. It handles one file at a time, up to 200 MiB.
Can I convert M4A, WAV or FLAC to MP3?
Yes. Select your audio file, choose a bitrate, and convert it to MP3. Keep the original WAV or FLAC if you need a lossless master.
Can I convert a video or a YouTube link?
You can select a local MP4, MOV, WebM or other listed video file with an audio track. This tool does not download from YouTube or accept website links.
Does the Free MP3 Converter upload my files?
No. ffmpeg.wasm processes the file in your browser. Your connection is used to load the page and processing engine, not to upload your media.
Will it work on my phone?
It can run in modern mobile browsers with WebAssembly and Web Worker support. Start below 50 MiB and keep the tab open. Available memory and conversion time vary by device.