Tuner
Play or sing a note and see how close you are. Your microphone never leaves this device.
This one needs your microphone
The tuner has to hear the note to tell you where it sits. Your browser will ask for permission when you press the button.
Nothing is recorded and nothing is sent anywhere — the sound is measured on this device and immediately forgotten.
About this tool
Play or sing a note and the tuner names it and shows how far off you are, measured in cents — hundredths of a semitone, which is the unit fine enough to matter. It works for any instrument, and for voice, because it listens to pitch rather than to a preset list of strings.
The audio is analysed in your browser and nothing is uploaded. That is not a promise about a policy, it is how the page is built: there is no request to send it in.
How to use it
- Allow microphone access when your browser asks.
- Play or sing one steady note.
- Read the note name and the cents, and adjust until it centres.
Questions
- Does my microphone audio leave my device?
- No. The analysis happens in the browser and nothing is transmitted or stored.
- Can I tune a guitar with it?
- Yes, and anything else. Play each string in turn and read the name and the deviation; the tuner does not need to be told which instrument it is listening to.
- What does the cents reading mean?
- A cent is a hundredth of a semitone. Within about five cents is in tune for most purposes; beyond about fifteen the difference is audible against another instrument.