AIF to M4R Converter

How to Convert AIF to M4R Online

1. Upload Your AIF Files: Drag and drop .aif files onto the page or click "+ Add Files". One-shots and loops from a sample pack, CD tracks ripped to AIFF on a Mac, and exports from music software all work, and you can convert a whole folder of short sounds in one batch.
2. Trim if the Sound Is Longer than 30 Seconds: Open Trim and set a Start time and a Duration of 30 seconds or less, in seconds or HH:MM:SS.sss. A short one-shot or loop needs no trimming at all. The note under Duration repeats Apple's 30-second guidance for iPhone ringtones.
3. Choose an AAC Bitrate: Under File Compression, pick Constant Bitrate (8 to 384 kbps), one of the five Variable Bitrate AAC bands (20k-32k up to 96k-112k), a Custom Bitrate, or a Specific file size; Quality Preset is the hands-off option. AIF is uncompressed, so 192-256 kbps keeps a sample crisp, and a few seconds of audio stays tiny at any rate.
4. Convert and Download: Click "Convert" and save each .m4r, or the batch as a ZIP. Files travel over HTTPS, are encoded on our servers and are deleted automatically after a few hours. No sign-up, no watermark.

AIF Files and Why They Make Good Tones

.aif is the three-letter spelling of AIFF, Apple's uncompressed PCM audio format from 1988. The bytes are identical to an .aiff file; the short extension survives from systems that limited extensions to three characters and is still common on files that move between Macs and Windows PCs. You are most likely to meet .aif in three places:

• Sample packs and sound libraries. Drum hits, synth stabs, risers and loops are often distributed as .aif, because AIFF is lossless and loads directly into Logic, GarageBand and most other DAWs.
• CD rips made on a Mac. iTunes and the Music app can import CDs with an AIFF encoder, which produces uncompressed .aif files.
• Exports from music and sound-design software, especially older or cross-platform tools that write the short extension.

The sample-pack case is where .aif shines for the iPhone. A one-second chime or a crisp snare roll makes a distinctive text tone, and a clean four-bar loop makes a ringtone that repeats seamlessly while the phone rings. Because the source is lossless, the AAC encode is the only lossy step, so the tone can sound as clean as the original sample.

The iPhone needs that sound as an .m4r file: AAC (AAC-LC) audio in an MPEG-4 container, the same container and codec as an .m4a, with the extension that tells iOS, Finder and iTunes it is a tone. This page converts the PCM in your AIF to AAC and writes the .m4r in one step. For other formats, the M4R converter lists every route into an iPhone ringtone.

AIF vs M4R: Format Comparison

Which Kind of Sample Makes Which Kind of Tone

The sizes come from bitrate × seconds ÷ 8: a 2-second one-shot at 192 kbps is about 48 KB, and 30 seconds at 256 kbps is about 960 KB, plus a little container overhead. For loops, trim at exact bar lines so the repeat has no gap or click.

Setting the Ringtone on Your iPhone

Move the .m4r onto the phone using one of the usual routes: connect the iPhone to a Mac and drag the file onto the iPhone in the Finder sidebar (macOS Catalina or later), or use iTunes on Windows. Apple's phone-only route is to save the file to Files, import it into GarageBand, then Share > Ringtone (Apple Support). The new tone appears in Settings > Sounds & Haptics > Ringtone, and also among the choices for Text Tone (Apple iPhone User Guide). For one person only, open the contact, tap Edit, then Ringtone or Text Tone.

Frequently Asked Questions

Is .aif different from .aiff?

No. They are the same format with two spellings of the extension, and both produce the same M4R. If your file ends in .aiff, AIFF to M4R runs the identical conversion. A file ending in .aifc is the AIFF-C variant, which may contain compressed audio.

Can a one-second sample be a text tone?

Yes. Apple's GarageBand guide notes that an exported ringtone can be used as a Standard Ringtone or a Standard Text Tone, and custom tones you add to the iPhone show up in both lists. Short, bright sounds such as chimes, claps and synth plucks work best because they cut through background noise.

How long can a ringtone be?

Apple's support article says ringtones can be up to 30 seconds long, and GarageBand shortens longer ones on export. The GarageBand for iPhone User Guide gives 30 seconds as the maximum exported length. Some older guides quote 40 seconds; that figure dates from the iTunes era and is not in Apple's current documentation, so stay at or below 30.

Will the conversion lose quality?

AAC is lossy, so a small amount of detail is discarded, but from an uncompressed AIF this is a single encode and at 192-256 kbps it is very hard to hear. Keep the AIF if it is part of a sample library you use for production.

Can I share ringtones made from a sample pack?

Check the licence first. Most sample packs are licensed for use in your own productions, and using a sound as your own phone's tone is a personal use, but redistributing tones made from someone else's samples may not be covered.

Is an M4R the same as an M4A?

The audio is: AAC in an MPEG-4 container. We write M4R with the same MPEG-4 muxer used for M4A, and ffprobe reports AAC LC in an MP4 file with major brand M4A . Only the extension changes, and that is what makes iOS list the file as a tone. For a standard music file, use AIF to M4A.

Can I go back from M4R to AIF?

Yes, M4R to AIF turns a tone back into an uncompressed AIF, for example to edit it in a DAW. The AAC loss from the first conversion stays, so keep your original sample.

What happens to my files?

They are uploaded over an encrypted (TLS) connection, converted on our servers and deleted automatically a few hours after processing. They are never shared or made public, and there is no sign-up.