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Instrument tuner
Tune a guitar, ukulele, bass, violin or oud with your microphone: note, cents and a needle.
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- Works on any device
About Instrument tuner
Pick your instrument and play a string near the microphone. The tuner shows the note it hears, how many cents sharp or flat it is, and a needle that centers when you are in tune. Standard guitar tuning is E A D G B E, and ukulele is G C E A.
How to use Instrument tuner
- Allow microphone access and choose your instrument.
- Play one open string and watch the note name and needle.
- Tighten or loosen the string until the needle sits in the middle.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
What does cents mean on a tuner?
A cent is one hundredth of a semitone. A reading of plus 10 means the string is slightly sharp, so loosen it a little.
Why does the tuner jump between notes?
Background noise or a string that is still ringing from another one can confuse it. Mute the other strings, play one note clearly, and let it sound for a moment.
Should I tune up to the note or down to it?
Tune up to the target note. If you pass it, loosen the string below the note and tighten again, since this helps the string hold its pitch.
Is Instrument tuner free?
Yes. Instrument tuner on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.