Convert FILE to MP3, Free
Files convert instantly in your browser. 100% private, any file size, no account needed.
Drop your FILE file here
or click to browse. Any file size.
Conversion runs entirely in your browser. Your file never leaves your device.
How to convert FILE to MP3
Any audio or video file that contains an audio track can be converted to MP3, the most universally supported compressed audio format. Whether you are starting from a WAV recording, an MP4 video, a FLAC album track, or an OGG podcast, converting to MP3 gives you a file that plays on phones, cars, smart speakers, and virtually every device made since the late 1990s.
The conversion runs in your browser using a WebAssembly audio engine. Your file never leaves your device, so there is no privacy concern and no upload time. There is also no server-side file size cap; the practical limit is your device's available memory.
Upload your file
Drop any audio or video file into the converter. Supported inputs typically include WAV, FLAC, OGG, MP4, MOV, AVI, M4A, and more.
Set the MP3 bitrate
Choose your target bitrate: 128 kbps for voice and podcasts, 192 kbps for general music, 320 kbps for highest quality.
Convert
The WebAssembly encoder decodes the source audio and re-encodes it as MP3. Longer files take more time proportionally.
Download the MP3
Click Download to save the .mp3 file. It is ready to play on any device or upload to any platform.
Frequently asked questions
What file types can I convert to MP3?
Any audio-bearing file that the WebAssembly decoder can read. Common inputs: WAV, FLAC, OGG, AAC, M4A, MP4, MOV, AVI, WMA. The specific list depends on the encoder library in use.
Which MP3 bitrate should I choose?
128 kbps is adequate for speech and podcasts. 192 kbps is a good general-purpose choice for music. 320 kbps is the maximum standard MP3 bitrate and is transparent to most listeners.
Is my file uploaded to a server?
No. Everything happens in your browser via WebAssembly. Your file stays on your device.
Does converting from FLAC or WAV to MP3 lose quality?
Yes. MP3 is a lossy format. Converting from a lossless source gives the encoder clean input, which is better than converting from an already-compressed source, but the resulting MP3 still has lossy compression applied.
What is the maximum file size?
There is no server-imposed limit. Practically, the limit is your browser's available memory, typically several gigabytes on a modern desktop.