Online Guitar Tuner
Guide & FAQ- Hz
Instrument
For best results hold the instrument close to the microphone in a quiet room and let each string ring out.
Guide: Online Guitar Tuner
How to tune a guitar online
Press Start tuner and allow microphone access. Pluck the lowest string and let it ring. The big letter shows the note, the needle shows how far you are from it in cents, and the line under it tells you to tune up or down. Turn the tuning peg slowly until the needle sits in the green centre, then move on to the next string.
Auto or manual string
By default the tuner finds the closest string of your tuning on its own. Click a string button to target just that string, which also plays its reference tone so you can tune by ear as well.
Instruments and tunings
- Guitar: Standard EADGBE, Drop D, half step down, DADGAD, open G.
- Ukulele: GCEA, plus baritone DGBE.
- Bass: 4 or 5 strings, and Drop D.
- Chromatic: any note, for other instruments and voice.
Tips for accurate tuning
Tune in a quiet place, pluck medium strength, and always tune up to the note: if a string is sharp, loosen it below the note first and then tighten to pitch. New strings stretch, so retune a few times. Recheck all strings when done, since changing one slightly shifts the neck tension.
FAQ
How do I tune my guitar with this tuner?
Press Start tuner, allow the microphone, and pluck one string at a time. The tuner shows the closest string and a needle: left of centre means the string is flat (too low, tighten it), right means sharp (too high, loosen it). When the needle is in the green centre zone, the string is in tune.
How accurate is it?
The tuner uses the YIN pitch detection algorithm and reports the pitch in cents (hundredths of a semitone). It is accurate to a few cents for clear tones, which is better than most ears. Microphone quality and room noise matter.
Which instruments and tunings are supported?
Guitar (Standard, Drop D, Half step down, DADGAD, Open G), ukulele (standard and baritone), bass (4 and 5 string, Drop D) and a chromatic mode that shows the nearest note of any sound.
The tuner does not react or jumps around. What can I do?
Move the instrument closer to the microphone, reduce background noise, let the string ring instead of strumming, and check that the right microphone is selected. Very quiet or very noisy signals cannot be measured reliably.
Can I change the reference pitch?
Yes. A4 is 440 Hz by default; set it between 415 and 466 Hz for baroque or other tunings.
Is any sound recorded or sent?
No. The microphone is only opened after you press Start and the sound is analysed live in your browser. Nothing is recorded or uploaded.