Online Guitar Tuner
Choose your instrument, press start, allow the microphone and play one string at a time.
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Press start, then play a string.
Tap a string to hear its note.
About Online Guitar Tuner
This tuner listens through your microphone, works out the pitch of the note you play and shows how far it is from the nearest string. If the needle is to the left of the middle the string is flat and needs tightening. If it is to the right the string is sharp and needs loosening. When it sits in the middle and the page says In tune, move to the next string.
Choose standard guitar tuning, drop D, half a step down, DADGAD or open G, a four string bass, a ukulele or a violin. The any note setting names whatever you play. Buttons play each string as a reference tone, so you can also tune by ear. You can change concert pitch from 440 Hz for early music or other standards. The microphone only starts when you press the button.
How to use Online Guitar Tuner
- Choose your instrument and tuning.
- Press Start listening and allow the microphone.
- Play one string and let it ring.
- Adjust the tuning peg until the needle is in the middle, then do the next string.
Common uses
- Tuning a guitar before playing
- Changing to drop D or open G tuning
- Tuning a ukulele or violin without a clip-on tuner
- Checking a bass before a rehearsal
Frequently asked questions
What are the notes of a standard guitar?
From the thickest string to the thinnest: E2, A2, D3, G3, B3 and E4. Their frequencies are about 82.41, 110, 146.83, 196, 246.94 and 329.63 Hz.
Why does the needle jump around?
Noise in the room, or a string that is still settling, can confuse the pitch detection. Pluck once, let it ring and keep other sounds quiet.
How accurate is it?
It reads pitch to within a fraction of a cent on a clean note. In tune is shown within 5 cents, which is too small a difference for most listeners to hear.
Should I tune up or down to the note?
Tune up to the note. If you go past it, loosen the string below the note and tighten up to it again, which helps the string stay in tune.
Why does it ask for the microphone?
It needs to hear the string. It only listens once you press Start listening and stops when you press the button again.