Drop C♯ Tuner

How to Use This Drop C♯ Tuner

1. Press Start Recording on the tuner above and allow microphone access.
2. The Drop C♯ preset is already selected, so the tuner listens for C♯ G♯ C♯ F♯ A♯ D♯.
3. Bring strings 5 to 1 down one semitone each: A→G♯, D→C♯, G→F♯, B→A♯, E→D♯.
4. Then lower string 6 by three semitones, from E to C♯ (69.30 Hz).
5. Go round all six strings a second time. Lowering six strings at once takes tension off the neck, and the first ones you tuned will have drifted slightly.

Already in half step down? Then you only need to move one string. Lower the 6th string from E♭ to C♯ — exactly one whole step — and you are in Drop C♯. That is the same move as going from standard tuning to Drop D, which is why this tuning is so popular with bands that already play in E♭.

What is Drop C♯ Tuning?

Drop C♯ is C♯ G♯ C♯ F♯ A♯ D♯, low to high: Drop D with every string lowered by a semitone. The top five strings sit in the same intervals as standard tuning, so chord shapes on them do not change, while the bottom three form a C♯ power chord when played open.

It sits between Drop D and Drop C. Compared with Drop D it is a little darker and looser; compared with Drop C it keeps more tension and stays playable on the strings most guitarists already have on.

Why Players Choose Drop C♯

• It pairs with half step down. A lot of rock is recorded in E♭ standard to suit the singer. If the band is already tuned down a half step, Drop C♯ is the natural drop tuning: one string to change, and every song in E♭ still works on the top five strings.
• One-finger power chords. With the low three strings in a fifth and an octave, a single finger barred across them at any fret gives a power chord — the riffing style Drop D is known for, a semitone lower.
• Easier on the voice. Taking the whole guitar down a semitone takes the songs down with it. For a singer working at the top of their range, that semitone can be the difference between reaching a chorus note and straining for it.
• Low setup cost. Unlike Drop C or Drop B, most guitars handle Drop C♯ on their existing strings with at most a heavier 6th string.

Strings and Setup

String tension rises and falls with the square of the pitch, so small changes in tuning add up. In Drop C♯, strings 1 to 5 are one semitone down and keep about 89% of their standard tension. The 6th string drops three semitones and keeps only about 71% — that is where you will feel the difference.

• .010–.046 sets play fine on the top five strings but the low C♯ can feel loose and fret out when you dig in.
• .010–.052 heavy-bottom sets are the common choice: standard feel on top, a firm low string.
• .011–.052 or .011–.054suit players who pick hard or play shorter-scale guitars such as a 24.75″ Les Paul, where the same note has less tension than on a 25.5″ Strat-style neck.

The string tension calculator shows the exact tension of your current set in Drop C♯ and suggests gauges that restore the feel of standard tuning. If you change gauges, check intonation afterwards; a floating tremolo will also need its springs rebalancing.

Checking Drop C♯ by Ear

Once one string is right, you can check the rest against each other. Fret the 6th string at the 7th fret and compare it with the open 5th string — in a drop tuning it is the 7th fret, not the 5th. After that, the usual pattern applies: 5th fret of the 5th string matches the open 4th, 5th fret of the 4th matches the open 3rd, 4th fret of the 3rd matches the open 2nd, and 5th fret of the 2nd matches the open 1st. A quicker check for the low string alone: its 12th-fret harmonic should match the open 4th string exactly, since both are C♯3.

Troubleshooting

The low string reads an octave high. The microphone is hearing the second harmonic louder than the fundamental. Pluck with the flesh of your thumb rather than a pick and move the phone a little closer to the body of the guitar.

Chords sound fine open but sour higher up. That is intonation, not tuning. A heavier 6th string or the change in tension moves the point where the string plays in tune at the 12th fret.

Songs in tabs are marked “Drop D♭”. Same tuning. Use this page as it is.

Related: half step down tuner (the same tuning with the 6th string at E♭), Drop D tuner, and Drop B tuner for going lower still. Every tuning in one table: the guitar tunings chart.