Online guitar tuner
Play one string at a time. The needle centres and turns green when you are within five cents.
How to tune with it
Press Let it listen and allow the microphone, choose your instrument and tuning, then play one string at a time. The needle shows how far off the note is in cents and turns green within five cents of it.
Standard guitar tuning, from the thickest string to the thinnest, is E A D G B E. The list also has drop D, half a step down, DADGAD and open G, four-string bass, the ukulele with a high G, a low G or as a baritone, and a chromatic mode for anything else.
It listens in your browser and records nothing: the sound from the microphone is read for its pitch and never stored or sent anywhere.
Free, with no account. Also free: the online metronome and 32 guitar lessons for beginners.