How to convert mobile voice recorder audios to MP3
Android and iPhone recorders usually save in M4A, AMR, WAV or 3GP. Converting to MP3 gives you universal compatibility across phones, computers, cars and editing apps, while also reducing size.
🎯 Universal converter (phone & desktop)
No install • Works on Android, iPhone and PC/Mac
Typical recorder formats & compatibility
- M4A (AAC) — common on iPhone. Good quality/size. For full compatibility: M4A → MP3.
- AMR — typical of older recorders and voice notes. Limited compatibility: AMR → MP3.
- WAV — uncompressed, maximum quality and large size: WAV → MP3.
- 3GP — old mobile container: 3GP → MP3.
How to transfer the recording to your computer
- USB cable — copy from Recordings or Downloads.
- Share — send via email or messaging (WhatsApp/Telegram) and download on your PC.
- Cloud — upload to Google Drive/Dropbox and download on the computer.
Convert recordings to MP3 (step by step)
On Android
- Find the recording (M4A/AMR/WAV/3GP) in your file manager.
- Open the converter in Chrome.
- Upload the file, choose 64–128 kbps for voice, and click Convert.
- Download the MP3 and share it or save it to the cloud.
On iPhone (iOS)
- Open Files and locate the recording (usually M4A).
- Go to the converter from Safari.
- Upload the recording, choose 64–128 kbps, and press Convert.
- Save the MP3 to Files or share via WhatsApp/email.
On PC/Mac
- Transfer the recording from your phone (USB, email or cloud).
- Open the converter in your browser.
- Upload the file, pick the quality, and download the MP3.
Recommended voice quality (kbps, mono/stereo)
| Use | Recommended kbps | Channels | Notes |
|---|---|---|---|
| Interviews / notes | 64–128 kbps | Mono | Clear speech with small file size. |
| Basic podcast | 128–160 kbps | Mono/Stereo | Better if there’s light background music. |
| Music or voice + music | 192–320 kbps | Stereo | Maximum fidelity; larger files. |
Tips for better results
- Normalize volume if it’s too low (e.g., with Audacity) or use MP3 → smaller MP3 to re-encode and boost loudness.
- Avoid multiple lossy conversions (M4A/AMR → MP3 → MP3). Prefer exporting once and adjusting bitrate.
- If the final MP3 is too large, drop to 64–128 kbps for voice.
How to organize & name your recordings
Use a date + topic scheme to find them easily:
2025-08-28-interview-javier.mp32025-09-02-meeting-note.mp32025-09-10-podcast-draft.mp3
Related
Frequently asked questions
Which formats do phone recorders use?
M4A (iPhone), AMR/3GP (some older Androids) or WAV. Converting to MP3 gives universal compatibility.
What quality do you recommend for voice?
Between 64–128 kbps in mono. With background music, 128–160 kbps; for maximum fidelity, 192–320 kbps stereo.
How do I move the recording to my PC?
Via USB, sharing (email/WhatsApp) or cloud (Drive/Dropbox). Then upload it to the converter.
Can I shrink the size even more?
Yes, re-encode at a lower bitrate or use MP3 → smaller MP3.
Is there quality loss when converting?
MP3 is lossy, but at 64–128 kbps speech usually remains clear with a very compact size.