01
ADD YOUR AAC
Drop the AAC file into the box above or choose it from your device.
AAC → M4R / online converter
AAC to M4R Converter
Turn an AAC file into an iPhone ringtone from its first 30 seconds.
01 / how to
How to convert AAC to M4R
02
CONVERT TO M4R
M4R is already selected. Press Convert and wait a few seconds.
03
DOWNLOAD
Save the finished M4R file. The original is deleted from our server.
02 / what you get
What happens to your data
Kept
- Raw AAC (ADTS) streams with the .aac extension are supported
- Saved as an iPhone ringtone (AAC in an iTunes-style MP4) at 192 kbps
- The first 30 seconds are kept, safely under the 40-second limit of iOS ringtones
Good to know
- Raw AAC files carry no title, artist or album tags, so there is nothing to copy over.
- The ringtone always starts at the beginning of the file. To use another part of the song, trim the audio first.
- To install it, add the .m4r to your iPhone in Finder (Mac) or the Apple Devices app / iTunes (Windows), then pick it in Settings > Sounds & Haptics.
- Both formats compress with quality loss, so every conversion costs a little quality. Keep your AAC original.
03 / formats
AAC vs M4R
AAC
An AAC file is a compressed audio format similar to MP3 but with better sound quality at the same bitrate. It's the standard for streaming audio, YouTube, and most modern devices' default recordings.
Used in: Streaming audio · YouTube · Modern device recordings
M4R
An M4R file is an iPhone ringtone: AAC audio in an Apple MP4 container, renamed to .m4r. iPhones only accept ringtones shorter than 40 seconds.
Used in: iPhone ringtones
04 / more
More conversions
Have a different file? Open the main converter — it detects the format for you.