Chromatic instrument tuner
Get in tune,
stay in tune.
Tune almost anything without fighting the tool. Choose from forty-two guitar and bass tunings, move the reference pitch when A440 is not what you need, and see exactly how far the string is off.
Range 27.5 to 1400 Hz
Resolution ±1 cent
Needs microphone access. Play one string at a time, near the pickup or mic, and let it ring.
Standard
Tap any string to hear its reference tone
Fret the note, then check
A string reads sharp the instant you press too hard. Tune with the same touch you play with, and check the tuning again after a hard strum, new strings especially will drift for the first hour.
Always tune upward
Come to pitch from below. If the note is sharp, drop it well under and bring it back up. That takes the slack out of the post and the slop out of the tuner gears, so it holds.
Cents, not decimals
A cent is a hundredth of a semitone. Under three cents is imperceptible on a single note; a five-cent error between two strings is a chord that sounds sour. Chase the needle, not the frequency.
Tuned up, now make it stay that way
A guitar that will not hold pitch usually has a nut or intonation problem rather than a tuner problem.
What this does not do
A tuner measures pitch. It cannot correct worn strings, binding at the nut, loose hardware, poor winding, or bad intonation.
What to do with the reading
Tune each string, play for a minute, and check it again. If the pitch returns sharp or flat, the tuner has shown the symptom, not the cause. Check the string winding, nut friction, hardware, and intonation next.
Last reviewed: August 2026