Also to know is, how do I open C tune?
To get into open-C tuning, tune the low E string down two whole steps to C. Bring the A string down a whole step to G and the D string down a whole step to C. Leave the G string where it is, raise the B string half a step to C, and leave the high E string alone. From low to high, the tuning is: C G C G C E.
Similarly one may ask, what tuning is C standard? C tuning is a type of guitar tuning, where the strings of the guitar are tuned two whole steps lower than standard tuning. In result, strings are tuned to C F A# D# G C (C F Bb Eb G C). C tuning for 6-string guitar.