Does this work on iPhone Safari?

Yes. Tap Choose file, pick a Voice Memo or M4A, set bitrate, then Convert. No app install.

Will my Voice Memo leave my phone?

No. Processing stays on the device. We never receive the file.

Yes if it has sound. We strip the video and encode the audio to MP3.

128 or 192 kbps is plenty for voice. Use 64–96 kbps if you need a tiny file.

Convert an iPhone Voice Memo or AAC recording to MP3. Runs in your browser. Your file never leaves this device.

Choose an M4A, AAC, or MP4 file (Voice Memos work on iPhone Safari)
Pick a quality (default High, 192 kbps); set an exact bitrate under Advanced settings
Click Convert and wait for encoding
Preview, then download the MP3