Free online audio converter

Convert Audio to M4R Online

Create an M4R-style ringtone output when your browser supports AAC/MP4 recording. M4R is commonly used for iPhone ringtone files.

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 M4R conversion

M4R is useful for short ringtone-style audio clips. Keep the clip short and test browser support before relying on it.

M4R output depends on browser AAC/MP4 MediaRecorder support. Safari usually has better support than some desktop browsers.

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 M4R

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 M4R output. The page is already set to M4R, 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.