7-string guitar tuner
Tune your 7-string guitar online with your phone or laptop microphone, with several tunings. Tap Use microphone, play one string at a time, and follow the meter until each note turns green. Nothing to download.
Standard 7-string guitar tuning
Standard 7-string tuning is B E A D G B E, from the thickest string to the thinnest. It is standard guitar tuning with an extra low B underneath.
| String | Note | Frequency |
|---|---|---|
| 7th (thickest) | B1 | 61.74 Hz |
| 6th | E2 | 82.41 Hz |
| 5th | A2 | 110.00 Hz |
| 4th | D3 | 146.83 Hz |
| 3rd | G3 | 196.00 Hz |
| 2nd | B3 | 246.94 Hz |
| 1st (thinnest) | E4 | 329.63 Hz |
Frequencies assume the standard reference pitch of A4 = 440 Hz.
How to tune a 7-string guitar
- Tap Use microphone and allow access when your browser asks.
- Play the low B string and let it ring. Low notes take a moment to settle.
- Follow Tune up or Tune down until the note turns green.
- Tune the other six strings, then check them all again.
7-string guitar tunings
Pick any of these from the tuning menu above the meter.
| Tuning | Notes | What it is |
|---|---|---|
| Standard | B E A D G B E | B E A D G B E, standard guitar with a low B added. |
| Drop A | A E A D G B E | The low B dropped to A for one-finger power chords. |
| Half step down | B♭ E♭ A♭ D♭ G♭ B♭ E♭ | Every string a semitone lower. |
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7-string guitar tuner questions
What are the 7-string guitar notes?
Standard 7-string tuning is B E A D G B E, from the 7th string to the 1st.
What is Drop A on a 7-string?
Drop A lowers the 7th string from B to A, so the bottom three strings form a power chord with one finger.
Does it work on my phone?
Yes. It works in Safari on iPhone and Chrome on Android, as well as desktop browsers. Hold the phone close to the instrument and allow microphone access when asked.
Why can't the tuner hear me?
Usually the browser hasn't been given access to the microphone, or it is listening to a different input. The tuner will tell you which, and how to fix it. Play one string at a time, close to the device.
Is my audio recorded?
No. The sound is analysed on your own device in real time. Nothing is recorded, stored or uploaded.