Maintained by Mayer · Last updated 2026-09-28
Online Pitch Changer (OnlinePitchChanger.com) is a free, independent website of browser tools that change the pitch and key of audio, video and voice, with guides on keys, semitones and vocal ranges. One person, Mayer, runs it for singers, musicians, karaoke users, music students and audio creators.
Run by: Mayer, independently.
Cost: free. No account, no sign-up, no newsletter.
Your files: processed in your browser, never uploaded.
Ads, affiliate links, sponsored posts: none. Nothing is sold.
Email: support@vocaltoollab.com (tools, privacy, corrections) · contact@vocaltoollab.com (general)
Who runs the site
Mayer runs Online Pitch Changer independently. Mayer maintains the tools, writes and checks the guides, and reads the email that comes in. There is no editorial team and no sponsor behind the pages. The author page linked above has a short profile and lists all of the posts Mayer has written.
The site is not affiliated with YouTube, Google, Spotify, any record label or any audio software maker. Apps and platforms are named only to explain how to use them.
Why the site exists
Changing the key of a song sounds simple until you try it. How many semitones do you need? Will the song speed up? Why does a voice sound strange after a big shift? The answers are usually spread across app manuals, forum threads and software you have to install first.
Online Pitch Changer puts the tool and the answer on the same page. The aim is a fast, free way to change the pitch or key of a song, voice or video in the browser, with no upload and the tempo kept, plus practical guidance on keys, semitones and vocal ranges that turns each change into a better performance or recording.
Every new page has to pass one test first: does it help a singer, musician or creator change or understand the pitch or key of their audio? If the answer is no, the page is not built.
What you can do here
| What you want to do | Tool |
|---|---|
| Change the pitch of a song or any audio file | Online Pitch Changer (the homepage tool) or the Pitch Shifter |
| Move a song to a new key | Online Key Changer |
| Change pitch and tempo separately | Pitch and Tempo Changer |
| Change the pitch of a video file | Video Pitch Changer |
| Change the pitch of a YouTube video while it plays | YouTube Pitch Changer |
| Sing a backing track in your own key | Karaoke Pitch Changer |
| Find the key of a song | Song Key Finder |
| Find your lowest and highest notes | Vocal Range Test |
| Count the semitones between two notes or keys | Semitone Calculator |
Every tool is listed on the pitch changer tools page. The guides explain what the tools change and why: start at all guides, or read What key should I sing in? if you want to find a key that fits your voice. Singer pages give estimated ranges from recordings and voice-type pages give typical ranges; neither is a diagnosis of anyone’s voice.
How the tools are built and tested
The audio tools run on one shared engine inside your browser. It decodes your file on your device, shifts the pitch while keeping the tempo (or changes both when you ask), and saves the result as a new file: WAV or MP3 for audio, and the same video with the new sound for video. The YouTube tool works differently: the video plays in YouTube’s own player, and the tool changes the pitch of the sound in your browser after you choose to share that tab’s audio. It does not download the video.
Each rebuilt tool is tested before release in a test copy of the site. Test tones go in, the downloaded files are decoded again and measured for pitch error in cents and change in length, and phone and desktop layouts are checked in Microsoft Edge. The How it works page explains the method, the measured results and what has not been tested yet, such as Safari and real phones.
Browser tools have limits, and the pages say so. Large shifts sound less natural than small ones, and a pitch changer moves the whole recording at once: it cannot fix single out-of-tune notes inside a mix.
How the guides are checked
Pages start from real questions people search for, and each question gets one page that answers it. Steps for apps such as Audacity or GarageBand are checked against the maker’s official manual, and music facts such as semitone counts and frequency ratios are calculated rather than copied. The full process, including how corrections work, is in the Editorial Guidelines.
Your files and your privacy
Audio, video and microphone sound are processed in your browser and are never uploaded; closing the tab clears them. Data security explains this tool by tool. The site itself uses Google Analytics to count visits, which the Privacy Policy covers together with your choices.
Please use the tools only with audio and video you own or have permission to use. The Terms set out the rules for using the site.
No ads, no sign-up, nothing for sale
There are no ads, no affiliate links, no sponsored content and nothing for sale on Online Pitch Changer. No account is needed and there is no newsletter. Apps recommended in the guides are not paid placements. If any of this ever changes, this page and the privacy pages will be updated first.
Contact
Tool problems, privacy questions, accessibility issues and corrections: support@vocaltoollab.com. General questions and partnership ideas: contact@vocaltoollab.com. The Contact page explains what to include in a bug report so a problem can be reproduced.