What this tool does
Shift a song to a key that suits your singing, make a voice deeper or funnier, or match two songs. Move the slider in semitones (one step on a piano); the speed stays the same.
How to use it
- Choose your audio file.
- Move the pitch slider up or down.
- Tap Change pitch and listen.
- Download the new file.
Why 123ToolBox
Your files stay with youEverything happens inside your browser. Nothing is uploaded to us or anyone else.
Free, no watermarkEvery tool is free. Your result has no logo or watermark.
No sign-upOpen the page and use it. No account, no email.
Made for phonesWorks on cheap Android phones as well as laptops.
FastNo upload or download wait. Small files finish in seconds.
Exact resultsWhen a form says “under 20 KB”, you get under 20 KB.
Questions people ask
How do I change the key of a song?
Move the slider: each step is one semitone. +2 raises the song by one full note.
Does it change the speed?
No. Only the pitch changes; the song keeps its length.
How do I make my voice deeper?
Choose your recording and move the slider to −3 or −4.
Is my audio uploaded?
No. Everything happens inside your browser. Your file never leaves your device.