Here is a free and useful way to make a ringtone of your desired tone by splitting the mp3 file. This is a online tool so you need not have to download anything – Mp3 splitter as the name suggests will split mp3 song files into small parts which can be used as ringtone for your cell phone.
The quality of the mp3 song will remain the same and only the length reduces, you can also reduce mp3 file size and upload them to Mp3 splitter.
Try Mp3 splitter
All you need to do to create custom ringtone is to upload .mp3 files, if you do not have any mp3 files then check out these tips for searching mp3 songs from the Internet. And after finishing the upload process, select the part of the mp3 song you want to set as a ringtone, download them and transfer to your phone! As simple as that..