Drop B Tuning
Drop B tuning is B – F♯ – B – E – G♯ – C♯, from the 6th string to the 1st. The 6th string goes down five semitones to B and the other strings go down three. Use the tuner below to tune each string.
Your browser will ask to use the microphone. Choose Allow.
✓ All strings in tune
Tap a string to hear it and tune only that string. Audio is analysed on this device and never uploaded. How it works →
- What it does
- Preset to Drop B: hears each string, shows which one and how far to turn it
- What it does not do
- Record or upload audio · detect chords
- Reference pitch
- A4 = 440 Hz, adjustable 415–466 Hz
- Tested with
- 58 studio recordings of 11 instruments (right note on about 95% of frames at normal volume) and test tones from B0 to C6
- Made by
- The Appcellent team
- Updated
- November 2026
Tuner not hearing you?
- Allow the microphone. If you blocked it: in Chrome or Edge, click the icon left of the address bar → Microphone → Allow, then reload. In Safari on iPhone, tap aA → Website Settings → Microphone → Allow. In Firefox, click the crossed-out microphone in the address bar. On a Mac, also check System Settings → Privacy & Security → Microphone for your browser.
- Open the page in Safari or Chrome. In-app browsers (Instagram, Facebook, TikTok) often block the microphone.
- Play one note at a time, louder. Hold your phone or laptop close to the instrument and let the string ring. A quiet room helps.
- Wrong octave or jumping notes? Let the attack fade for a moment — the reading settles once the note is steady.
- No microphone at all? Tap a string button to hear its note and tune by ear.
Drop B notes and frequencies
Drop B tuning is B1 (61.74 Hz), F♯2 (92.50 Hz), B2 (123.47 Hz), E3 (164.81 Hz), G♯3 (207.65 Hz) and C♯4 (277.18 Hz), from the 6th string to the 1st. From standard tuning (E A D G B E): Lower the 6th string from E to B (5 semitones); lower the 5th string from A to F♯ (3 semitones); lower the 4th string from D to B (3 semitones); lower the 3rd string from G to E (3 semitones); lower the 2nd string from B to G♯ (3 semitones); lower the 1st string from E to C♯ (3 semitones).
| String | Note | Frequency | From standard |
|---|---|---|---|
| 6 | B1 | 61.74 Hz | E2 → B1 · down 5 semitones |
| 5 | F♯2 | 92.50 Hz | A2 → F♯2 · down 3 semitones |
| 4 | B2 | 123.47 Hz | D3 → B2 · down 3 semitones |
| 3 | E3 | 164.81 Hz | G3 → E3 · down 3 semitones |
| 2 | G♯3 | 207.65 Hz | B3 → G♯3 · down 3 semitones |
| 1 | C♯4 | 277.18 Hz | E4 → C♯4 · down 3 semitones |
About Drop B tuning
Drop B is a low tuning for modern metal and heavy rock. It is C♯ standard with the 6th string dropped another whole step, so the three lowest strings form a B power chord when played open.
The strings lose a lot of tension this low. A heavy string set (12s or 13s), a baritone guitar or a 7-string guitar makes drop B much easier to keep in tune.
How to tune to Drop B
- Press Start tuner above and allow the microphone. The tuner is already set to Drop B.
- Play one string at a time. The tuner shows which string it hears and whether to tune up or down.
- Turn the peg until the needle is centered and the note turns green. Tap a string button to hear its target note.
- After all strings are done, check them again — changing tension on one string pulls the others slightly.