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Key Signature Calculator

Find the major key from the number of sharps or flats.

Calculated Output

Major key D major

Relative minor B minor

Formula: Circle of fifths lookup

Step-by-Step Breakdown

1. Values used:

2. Number of accidentals = 2

4. Major key = D major

5. Relative minor = B minor

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The math behind it

Each step around the circle of fifths adds one sharp (clockwise) or flat (counter-clockwise).

2 sharps is D major (B minor).

What is a relative minor?

The minor key that shares the same key signature, a minor third below the major.