Free online audio converter

Convert Audio to MP3 Online

Create a browser-based MP3 output from supported audio files. MP3 is a practical choice when you need a smaller file for sharing, storage, podcast clips, voice notes, or everyday playback.

Upload audio file

Drop an audio file here, or choose a file from your device. The converter tries to decode the file locally in your browser.

Choose Audio File

MP3WAVWMAOGGM4R3GPPOPUSM4AAACAMRFLACAIFFAPE

Output format

About MP3 conversion

MP3 works well for smaller files, quick sharing, voice clips, podcast previews, and general audio playback on most devices.

MP3 output uses the included browser MP3 encoder. For very long files, use a shorter selection or a lower bitrate if your browser runs out of memory.

The converter runs in your browser. It accepts common audio extensions such as MP3, WAV, WMA, OGG, M4R, 3GPP, OPUS, M4A, AAC, AMR, FLAC, AIFF, and APE, but actual decoding depends on browser support. Older formats such as WMA, AMR, 3GPP, APE, and exact AAC/MP4 outputs may require server-side conversion.

How to use

How to convert audio to MP3

Upload your audio file. Choose an audio file from your device or drag it into the upload area.
Wait for local decoding. The browser reads the audio file and prepares it for conversion when the format is supported.
Create the MP3 output. The page is already set to MP3, so you only need to click the create button.
Download manually. When the output is ready, click the download button yourself. The file does not auto-download.

Formats

Input and output format notes

These are the input extensions accepted by the upload field. Browser support is different from full codec support, so a file can be accepted by the picker but still fail if the browser cannot decode it.