C major key signature
C major has no sharps or flats. Its relative minor is A minor. The chart below shows the key signature on the treble staff — free to print or download.
What is in the C major key signature?
C major has no sharps or flats. Every note is natural unless an accidental is written in front of it.
How to read it
- Look at the accidentals. C major has an empty key signature — no sharps or flats after the clef.
- Name the key from the last accidental. C major and F major are the two you simply memorise — no sharps, or one flat (B♭).
- Find the relative minor. C major shares this key signature with A minor, its relative minor.
See how it fits with every other key on the circle of fifths(or fill in a blank circle of fifths from memory), learn the notes on the treble clef, or read the guide toreading sheet music.
C major key signature — frequently asked questions
How many sharps or flats does C major have?
C major has no sharps or flats.
What is the relative minor of C major?
A minor is the relative minor of C major — it uses the same key signature.
Is the C major key signature chart free to print?
Yes — print it or download the PDF or PNG for free, with no sign-up.