What Is Drop C Tuning? A Comprehensive Guide for Guitarists

Drop C tuning is an alternate guitar tuning where all six strings are lowered from standard (EADGBE) by a specific interval: the lowest string (6th) is dropped a whole step from D to C, while the remaining strings are tuned down a whole step from standard, resulting in CGCFAD. This tuning is widely used in heavy metal and hard rock for its deep, powerful sound and ease of playing power chords.

Etymology / Origin

The term “drop C” derives from the concept of “drop” tunings, which originated with drop D tuning (DADGBE). In drop D, only the 6th string is lowered a whole step from E to D, while the rest remain in standard. Drop C extends this idea: first, all strings are tuned down a whole step (DGCFAD, sometimes called “D standard”), then the 6th string is dropped an additional whole step to C. The resulting tuning (CGCFAD) emerged in the 1990s as heavy metal and hard rock guitarists sought lower, heavier tones without sacrificing the ease of one-finger power chords. Bands like System of a Down, Slipknot, and Killswitch Engage popularized the tuning, making it a staple of modern metal.

How It Works

In standard tuning (EADGBE), the strings are tuned in perfect fourths except for the major third between the G and B strings. Drop C tuning lowers the overall pitch by a whole step and then drops the sixth string an additional whole step, creating a perfect fifth interval between the lowest two strings (C–G) instead of the usual fourth. This allows guitarists to play power chords (root and fifth) on the lowest three strings with a single finger barre, facilitating fast riffing and heavy, droning sounds. The lower tension requires thicker string gauges to maintain proper intonation and feel. Typically, a set of .011–.056 or .012–.060 strings is recommended for a 25.5-inch scale guitar to achieve stable tuning and avoid fret buzz.

Notation & Diagrams

Below is a text-based tablature representation of a common power chord shape in Drop C tuning, using the 6th, 5th, and 4th strings:

C5 power chord (Drop C)
E|-----
A|-----
D|--5-- (G)
G|--5-- (C)
C|--3-- (C)
C|----- 

In standard notation, the strings are tuned (low to high) C2, G2, C3, F3, A3, D4. The interval structure is C–G (perfect fifth), G–C (perfect fourth), C–F (perfect fourth), F–A (major third), A–D (perfect fourth). This tuning allows for easy one-finger power chords on the lowest three strings, as the root and fifth are on the same fret.

Step-by-Step / How to Tune

1. Start with standard tuning (EADGBE) or drop D (DADGBE). If using a chromatic tuner, you can tune directly to the target notes.
2. Lower the 6th string from E to C. This is a drop of two whole steps. Use a tuner and pluck the string repeatedly while slowly loosening the tuning peg. The string will feel noticeably slacker.
3. Tune the 5th string from A to G. Lower by one whole step. Match it to the 5th fret of the 6th string (now C), which should produce a G note.
4. Tune the 4th string from D to C. Lower by one whole step. Match it to the 5th fret of the 5th string (G) to get C.
5. Tune the 3rd string from G to F. Lower by one whole step. Match it to the 5th fret of the 4th string (C) to get F.
6. Tune the 2nd string from B to A. Lower by one whole step. Match it to the 4th fret of the 3rd string (F) to get A.
7. Tune the 1st string from E to D. Lower by one whole step. Match it to the 5th fret of the 2nd string (A) to get D.
8. Re-check all strings and make fine adjustments. The lower tension may cause other strings to go slightly sharp or flat during the process.

Common Variations

• Drop C# (C# G# C# F# A# D#): All strings down a half step from standard, then 6th string dropped a whole step from D# to C#. Popular in metalcore.
• Drop B (B F# B E G# C#): All strings down two and a half steps from standard, then 6th dropped to B. Used in very heavy genres; often requires a baritone guitar or heavier strings.
• Drop A (A E A D F# B): A full octave below standard on the 6th string; used in djent and extreme metal, typically on 7-string guitars or with very thick strings.
• Double Drop C (C G C F A C): Both 6th and 1st strings are dropped to C, creating a symmetrical open tuning favored for ambient and drone music.

Common Mistakes

• Using standard string gauges: Drop C requires thicker strings to maintain proper tension. Light strings (.009–.042) will be too floppy, causing tuning instability and intonation issues.
• Neglecting truss rod adjustment: Lower tension can cause the neck to back-bow, leading to fret buzz. A slight truss rod loosening may be necessary.
• Ignoring intonation: Changing string gauge and tuning alters the string’s length and tension, requiring saddle adjustments for accurate intonation across the fretboard.
• Forgetting to stretch new strings: New strings, especially thicker ones, need proper stretching to hold tuning. Tune, stretch, retune repeatedly until stable.
• Using a standard nut: Thicker strings may not fit properly in a nut cut for .009–.042 gauges, causing binding and tuning issues. The nut slots may need widening.

Notable Examples in Songs

• “Chop Suey!” – System of a Down
• “Before I Forget” – Slipknot
• “My Curse” – Killswitch Engage
• “The End of Heartache” – Killswitch Engage
• “Toxicity” – System of a Down
• “Laid to Rest” – Lamb of God