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Chromatic tuner
The nearest note to whatever you play or sing, and how many cents off, with A4 from 415 to 466 Hz. Free, with no account or uploads.
Find the note you are playing
Press Start and play or sing one note; the nearest note and how far off it is are shown.
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Press Start and play a string
440 Hz is the usual pitch (ISO 16).
The microphone is asked for only when you press Start, and stopped when you press Stop or leave. The sound is read in your browser and never sent or kept.
A little help along the way
Follow these steps. Every option is explained underneath. The sound is read in your browser and never kept.
- Say what you are tuningA guitar, ukulele, bass, violin, or any note.
- Press StartAllow the microphone when the browser asks.
- Play one stringTighten when it says flat, loosen when it says sharp, until it says In tune.
Questions people ask
- Is the sound recorded or sent anywhere?
- No. The microphone is asked for only when you press Start, the sound is read in your browser as it comes, and nothing is recorded, sent or kept.
- What is a cent?
- A hundredth of a semitone; within 5 cents a note sounds in tune to most ears.
- Can I tune to another pitch than A 440?
- Yes. Set A4 from 415 to 466 Hz under More options; 440 Hz is the usual pitch (ISO 16).
This page is the Tuner, opened for this one job; every other tool it has is one press away. Each of its settings is explained on the Tuner's own page.
Read the step-by-step guide