Audio Tools That Stay on Your Device

Trim MP3s, make iPhone and Android ringtones, merge podcast episodes, transpose songs, and record voice memos — all in your browser. Your files never upload. No signup, no watermarks, no file size limits.
WHY USE CUT.AUDIO?
Runs on Your CPU
Powered by WebAssembly — the same engine used by pro audio apps. No upload queue, no file size cap, no watermarks. Results in seconds.
100% Private
Your audio never leaves your device. Safe for sensitive recordings — interviews, medical notes, legal dictation. No accounts, no tracking, no cloud storage.
Works Everywhere
Any modern browser on Windows, Mac, Linux, Chromebook, iPhone, or Android. No installs, no plugins, no extensions — just open the page.

Frequently Asked Questions

Yes. All tools are free with no limits. There's no premium tier, no ads, no watermarks, and no file size restrictions.

No. Your audio never leaves your device. Everything is processed locally in your browser. No data is sent anywhere.

MP3, WAV, FLAC, and OGG. You can convert between any of these formats, and all tools accept all four formats as input.

There's no server-side limit since files aren't uploaded. The limit depends on your device's available memory. Most devices handle files up to several hundred MB without issues.

Yes. cut.audio works in any modern browser including Safari on iPhone/iPad and Chrome on Android.

Yes. The Audio Cutter and Ringtone Maker both let you trim to 30 seconds and export as MP3, ready to use as a ringtone on iPhone or Android.