How to Convert YouTube to MP3 on iPhone
Copy YouTube Link
Open the YouTube app, find your video, tap Share → Copy Link.
Open FastAudio in Safari
Open Safari, go to fastaudio.cc, and paste the YouTube link.
Convert & Save
Tap Convert, then Download. The MP3 saves to your Files app automatically.
Where Do Downloaded MP3 Files Go on iPhone?
When you download an MP3 using Safari on iPhone, the file saves to your Files app under "Downloads." From there you can:
- Play the MP3 directly in the Files app
- Move it to the Music app for permanent library access
- Share it via AirDrop, Messages, or any app that supports audio files
- Access it from any app that reads from the Files app (VLC, Documents, etc.)
💡 Tip: For the best download experience on iPhone, use Safari — not Chrome or Firefox. Safari has the best native file download handling on iOS and saves MP3 files directly to your Files app without additional steps.
Does It Work on All iPhone Models?
iPhone 14 & 15 Series
Fully supported. Safari on iOS 16, 17 and 18 handles MP3 downloads natively.
iPhone 12 & 13 Series
Fully supported. Works perfectly in Safari on iOS 14, 15 and 16.
iPhone SE & Older
Works on any iPhone running iOS 14 or later. The minimum requirement is iOS 14.
iPad
FastAudio works on all iPad models in Safari, with the same download experience.
Frequently Asked Questions
Can I add the downloaded MP3 to Apple Music?
Yes. Open the Files app, find your downloaded MP3, tap the Share icon, and select "Add to Music Library." The track will appear in your Apple Music library for playback.
Why doesn't the download work in Chrome on iPhone?
Chrome on iOS uses Apple's WebKit engine but handles file downloads differently from Safari. For the most reliable MP3 downloads on iPhone, use Safari.
How much storage does a YouTube MP3 use on iPhone?
A 3-minute song at 320kbps uses approximately 7 MB. A 30-minute podcast at 128kbps uses approximately 28 MB. iPhone storage is rarely a concern for individual downloads.
Convert YouTube to MP3 on iPhone
Open FastAudio in Safari, paste your link, tap Convert. That simple — free, no app.
🎵 Start Converting Free →