The five-minute version
How to make a ringtone from a song comes down to three decisions: which 20 to 30 seconds you use, how you cut them, and how you get the clip onto your phone. The first decision matters most, because most people making a ringtone from a song grab the beginning, and the beginning is almost never the part you would recognize in a noisy room.
The cutting part is the easy bit. Our free Audio Cutter trims any audio file right in the browser, no signup, no install. The phone part depends entirely on which phone you own: Android accepts an MP3 directly, while iPhone makes you take a detour through GarageBand or an iTunes/Finder sync. This guide covers all of it, including the annoying parts.
Pick the hook, not the intro
Play your song and be honest about when it actually starts. Most tracks spend their first 10 or 20 seconds building: a fade-in, a filtered drum loop, an ambient pad. That is good arrangement and a terrible ringtone. When your phone rings you get a few seconds before you answer it or silence it, so those seconds need to be the most recognizable moment in the song.
That moment is usually the first line of the chorus, the main riff, or the drop. A good test: if someone played you a random five second slice, which slice would make you name the song instantly? Start your selection there, ideally on a downbeat or a fraction before the vocal comes in, so the ringtone does not open mid-word.
Keep the whole clip under 30 seconds. The iPhone ringtone paths expect short clips, and a ringtone loops from the start anyway, so the opening is what you hear over and over. The ending barely matters. Spend your care on the first two seconds.
Cut it in the browser
Open the Audio Cutter, drop your file in, and drag the two handles around the section you picked. The preview plays only the selection, so you hear exactly what the ringtone will sound like, nudge the start point, and listen again until the entry feels right.
You get two ways to export. Lossless cut copies the audio stream without re-encoding, so quality is untouched; the tradeoff is that the cut snaps to the file's frame boundaries, which lands within a few hundredths of a second of where you aimed. Precise mode re-encodes and gives you sample-accurate edges. For a ringtone, lossless is almost always fine. Reach for precise only if you want the clip to open exactly on a beat.
Everything runs in the browser, nothing is uploaded, and we never see the file. For a chart hit that is a nicety. If your ringtone is a personal recording, your kid laughing in a voice memo or a rough take of your own song, it is the whole point: the audio never leaves your machine.
Android: the easy one
Android accepts MP3 ringtones directly, so if your cut exported as an MP3, you are nearly done. Get the file onto the phone however you normally move files: a USB cable, a cloud drive, or messaging it to yourself. Then set it from the sound settings or the ringtone picker; the exact menu names vary by manufacturer, but every Android build has a way to choose a file you added yourself.
If your source song was an M4A, FLAC, WAV, or OGG, convert the clip to MP3 first with the free Audio Converter, or use the dedicated M4A to MP3 page. Use 256 or 320 kbps and convert once: every lossy-to-lossy pass adds a small generation loss, and a single clean conversion at a high bitrate keeps it inaudible. At 320 kbps a 30 second clip lands around 1.2 MB, so file size is a non-issue.
iPhone: the honest part
Here is the part most guides mumble through: an iPhone will not accept an MP3 ringtone from the Files app. You can save the clip to your phone all day and the ringtone settings will never list it. Two paths actually work, and both are Apple's own.
Path one stays on the phone: GarageBand. Bring your clip into a GarageBand project, then use its share option to export the project as a ringtone. It shows up in your ringtone list like any built-in tone. This is the route if you do not want to involve a computer. Keep the clip under 30 seconds before you start; the ringtone paths expect short clips.
Path two goes through a computer: convert the clip to M4A, change the file extension to .m4r (Apple's ringtone extension, the file is otherwise the same), then sync it to the phone through iTunes on Windows or Finder on a modern Mac. It feels dated because it is, but it works reliably, and it is the better route if you are making tones for the whole family in one sitting.
One sentence on rights, then make it yours
The rights question in one sentence: cutting a song into a ringtone for your own phone is a personal-use matter, but publishing or distributing an edit of someone else's track needs permission from whoever owns it.
If you want the tone to feel like yours rather than a straight excerpt, small transformations go a long way. Try shifting the clip a semitone or two with the free Pitch Changer; our guide on how to change the pitch of a song covers when a shift sounds natural and when it starts to sound artificial. A familiar chorus, two semitones down, is instantly recognizable to you and matches nobody else's phone in the room.