C♯ Standard Tuning
C♯ standard tuning is C♯ – F♯ – B – E – G♯ – C♯: every string three semitones below standard. Drop C♯ is C♯ – G♯ – C♯ – F♯ – A♯ – D♯: half step down with the 6th string dropped a further whole step. Pick either one in the tuner below.
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 C♯ Standard: 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.
C♯ Standard notes and frequencies
C♯ Standard tuning is C♯2 (69.30 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 C♯ (3 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 | C♯2 | 69.30 Hz | E2 → C♯2 · down 3 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 |
Drop C♯
| String | Note | Frequency | From standard |
|---|---|---|---|
| 6 | C♯2 | 69.30 Hz | E2 → C♯2 · down 3 semitones |
| 5 | G♯2 | 103.83 Hz | A2 → G♯2 · down half step |
| 4 | C♯3 | 138.59 Hz | D3 → C♯3 · down half step |
| 3 | F♯3 | 185.00 Hz | G3 → F♯3 · down half step |
| 2 | A♯3 | 233.08 Hz | B3 → A♯3 · down half step |
| 1 | D♯4 | 311.13 Hz | E4 → D♯4 · down half step |
About C♯ Standard tuning
C♯ standard (also called D♭ standard) keeps normal chord shapes but sounds a minor third lower. It is popular in heavy rock and metal for a dark sound without the slack strings of even lower tunings.
Drop C♯ (also written drop D♭) is drop D moved down a half step. Both tunings work on a normal guitar with a slightly heavier string set (11s or 12s).
How to tune to C♯ Standard
- Press Start tuner above and allow the microphone. The tuner is already set to C♯ Standard.
- 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.