Drop C tuner

Tune to Drop C (C G C F A D) with your phone or computer microphone. Press start, play a string and follow the needle.

Quick answer

Drop C, low to high: C G C F A D.

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Press start, then play a string

Your browser will ask to use the microphone. Sound is processed on your device and never sent anywhere.

Strings: tap to hear the note, or to lock the tuner onto one string
Reference pitch

Drop C: notes and frequencies

Drop C: notes and frequencies with A4 = 440 Hz
StringNoteFrequency
6C265.41 Hz
5G298.00 Hz
4C3130.81 Hz
3F3174.61 Hz
2A3220.00 Hz
1D4293.66 Hz

Drop C is C G C F A D, from the lowest string to the highest. D standard with the low string dropped another whole step to C. A staple of modern metal; heavier strings help.

How to tune

  1. Press Start tuner and allow the microphone.
  2. Play one string at a time and let it ring.
  3. Tune up if the needle sits left of center and down if it sits right. The note turns green within 3 cents.

Other tuners

Half step down tunerD standard tunerDrop D tunerDrop C tunerDrop B tunerOpen G tunerOpen D tunerOpen E tunerDADGAD tuner7-string guitar tuner7-string drop A tuner8-string guitar tuner8-string drop E tunerBass tuner5-string bass tunerUkulele tuner

Tuners for every setup

A clip-on works anywhere. A pedal tuner mutes your signal on stage.

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Common questions

What notes are drop C?
C G C F A D, low to high.

Last updated November 14, 2026.