Audio to iPhone Ringtone — Free Online

Creating a custom iPhone ringtone from your own music or recordings used to require iTunes, a specific file-rename trick, and a sync cable. Apple has never made this straightforward, and the workarounds change with every iOS update. The core requirement, however, has stayed the same: a ringtone must be an M4R file, under 30 seconds, trimmed to the part you actually want to hear.

This tool handles all three steps in one place. Upload any audio file, choose your start and end times to capture the best 30 seconds, and download an M4R file ready to transfer to your iPhone. No iTunes required, no obscure file renaming, no sync cable gymnastics.

How to Create a Ringtone from Audio Online

1. 1

   Upload your audio file

   Drop any MP3, WAV, FLAC, OGG, or AAC file. Files up to 100 MB are supported.

2. 2

   Set the clip start and end time

   Enter the start and end time for your ringtone clip. Ringtones are typically 30–40 seconds long.

3. 3

   Download your ringtone

   Click Create. FileCrank trims and exports your clip as M4R (iPhone) or MP3 (Android). Files are deleted within 1 hour.

How M4R Ringtone Conversion Works

M4R is simply AAC audio wrapped in an MPEG-4 container with the file extension changed from .m4a to .m4r — the extension is the only thing that signals to iOS that the file is a ringtone rather than a music track. The tool uses WebAssembly FFmpeg to trim the audio to your chosen time range and encode it as AAC-LC at 128 kbps, which balances quality with the small file sizes that iOS expects.

The trim operation uses FFmpeg's seek-and-duration flags for frame-accurate cutting. The resulting AAC stream is wrapped in an M4A container, then the file is served to the browser with the .m4r extension. No data ever leaves your device during this process.

Why Use FileCrank to Create Ringtones?

• ✓ Export as M4R for iPhone or MP3 for Android — both in one step.
• ✓ Precise start and end time selection using HH:MM:SS format.
• ✓ Supports MP3, WAV, FLAC, OGG, and AAC input.
• ✓ No watermarks, no signup, completely free.
• ✓ Files are processed securely and deleted within 1 hour.

機能と仕様

最大ファイルサイズ

最大100 MB

プライバシー

ファイルは約1時間後に削除されます

料金

無料、登録不要

処理方式

サーバーサイド

Frequently Asked Questions

Browser Tool vs iTunes Ringtone Workflow

The traditional iTunes method requires converting a track to AAC, locating the file in Finder, manually renaming it to .m4r, dragging it into the Tones library, and syncing via cable. This tool collapses that entire workflow into a single browser session with no software dependency, making it far faster for anyone who just wants one custom ringtone.

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