How to use the Guitar Tuner
- Choose your instrument and tuning, such as Guitar – Standard (E A D G B E).
- Click Start tuning and allow the microphone when asked.
- Pluck one string and let it ring. Tighten the string if the needle is left (flat), loosen it if it's right (sharp), until it turns green.
- Or click a string's name to hear its note and tune by ear.
Standard guitar tuning
| String | Note | Frequency |
|---|---|---|
| 6 (thickest) | E2 | 82.41 Hz |
| 5 | A2 | 110.00 Hz |
| 4 | D3 | 146.83 Hz |
| 3 | G3 | 196.00 Hz |
| 2 | B3 | 246.94 Hz |
| 1 (thinnest) | E4 | 329.63 Hz |
Tips for accurate tuning
- Tune in a quiet room, and play close to your device's microphone.
- Pluck firmly once and let the note ring; don't keep re-plucking.
- Tune up to the note: if you're sharp, go below it first, then come back up. The string holds its pitch better.
- Check each string again at the end: tightening one can pull the others slightly out of tune.
What do the cents mean?
A cent is 1/100 of a semitone. Within ±5 cents is in tune for almost everyone's ears; the tuner turns green within ±3.
Frequently asked questions
Is the microphone recording me?
No. The sound is analyzed live in your browser to find the pitch. Nothing is recorded or uploaded.
Can I tune an acoustic and an electric guitar?
Yes. For electric guitars without a microphone, play near your amp or use your device's built-in mic close to the strings.
Why does the needle jump around?
Background noise or several strings ringing at once confuse any tuner. Mute the other strings with your hand and play one at a time.
What is 440 Hz?
The standard pitch of the A above middle C. Change it if your band tunes to 432 or 442 Hz.
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