Online tuner
Allow the microphone, play one string and follow the needle. When it turns green and sits in the middle, the string is in tune.
0 cents · 0 Hz
Tap a string to hear its note.
How to use it
- 1
Choose your instrument and tuning, then press "Start tuning" and allow the microphone.
- 2
Play one string at a time, close to the phone or computer.
- 3
Tighten or loosen the string until the needle turns green in the middle.
Instruments and tunings
- 01Guitar.
Standard (E A D G B E), half step down, Drop D, D standard, Open G and DADGAD.
- 02Bass.
4 strings (E A D G), half step down and Drop D, or 5 strings with the low B.
- 03Ukulele.
Standard G C E A, with high or low G.
- 04Cavaquinho.
D G B D, the Brazilian standard, or D G B E.
- 05Violin and cello.
G D A E on the violin and C G D A on the cello.
- 06Any note.
Chromatic mode shows the closest note, for voice, wind instruments or anything else.
Tips for tuning faster
- 01Tune up to the note.
If the string is too high, loosen it below the note and come back up. It holds the tuning better.
- 02One string at a time.
Mute the others so the tuner hears only the one you are tuning.
- 03Check twice.
Changing one string pulls the neck a little. Go over all of them a second time.
- 04New strings stretch.
With new strings, retune a few times in the first days.
Common questions
Is the sound recorded or sent anywhere?
No. The tuner only listens while the page is open, the sound is analyzed on your device and nothing is recorded or sent to any server.
What are the standard guitar notes?
From the thickest to the thinnest string: E, A, D, G, B, E (E2 A2 D3 G3 B3 E4).
Does it work for an electric guitar or bass?
Yes. Play close to the microphone, or to the amplifier. On a bass, pluck firmly and let the note ring.
What is A4 = 440 Hz?
It is the reference pitch most music uses today. Some bands and orchestras tune a little higher (442) and some people like 432. Change it only if you need to match someone.
The needle jumps around. What do I do?
Play one string only, let it ring, and mute the others with your hand. A quiet room helps a lot.