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Key Signature Chart: Every Signature With Its Major and Minor Key

This key signature chart lines up all fifteen signatures in one table: how many sharps or flats each carries, the major key it names, the relative minor that shares it, and the exact order the signs are written in. The rows run from seven flats down to none, then on through seven sharps. Below the table: how to build any signature from the two fixed lists, and how to hear a piece in a key you already recognise.

What key signature chart means

Each row names one signature, from seven flats through none to seven sharps, and lists its signs in the fixed order next to the major key and the relative minor. The table below is plain HTML, so it stays readable with scripting off.

All fifteen signatures, from seven flats through none to seven sharps
Order Major key Relative minor
7 flats B flat, E flat, A flat, D flat, G flat, C flat, F flat C flat major A flat minor
6 flats B flat, E flat, A flat, D flat, G flat, C flat G flat major E flat minor
5 flats B flat, E flat, A flat, D flat, G flat D flat major B flat minor
4 flats B flat, E flat, A flat, D flat A flat major F minor
3 flats B flat, E flat, A flat E flat major C minor
2 flats B flat, E flat B flat major G minor
1 flat B flat F major D minor
No signs none C major A minor
1 sharp F sharp G major E minor
2 sharps F sharp, C sharp D major B minor
3 sharps F sharp, C sharp, G sharp A major F sharp minor
4 sharps F sharp, C sharp, G sharp, D sharp E major C sharp minor
5 sharps F sharp, C sharp, G sharp, D sharp, A sharp B major G sharp minor
6 sharps F sharp, C sharp, G sharp, D sharp, A sharp, E sharp F sharp major D sharp minor
7 sharps F sharp, C sharp, G sharp, D sharp, A sharp, E sharp, B sharp C sharp major A sharp minor

People reach this table as a key sig chart, a music key chart or a piano key signature sheet. It holds all major key signatures at once, so every row is both a major key signature chart line and a minor key signature chart line.

How to read this signature

Nothing about these signs is arbitrary. Sharps come along in the order F, C, G, D, A, E, B and flats come along in the order B, E, A, D, G, C, F, so every row above is simply a leading run of one of those two lists.

Sharps are added F, C, G, D, A, E, B; flats are added B, E, A, D, G, C, F.

Each row pairs a major key with a minor key a third below it, which is why the chart carries two name columns for every signature instead of one.

Numbers you can check

This chart maps 15 key signatures to 30 named keys — fifteen major keys plus the fifteen relative minors that share their signatures. That one-signature-to-two-keys mapping is the whole reason each row needs a major and a minor column.

Every pitch named in the table can be checked the same way: equal temperament from A4 = 440 Hz puts a note n semitones above A4 at 440 × 2n/12 Hz.

Those pitches are arithmetic. A separate reading of one recording is in the example: on 16 October 2026 the key finder called the opening of Bach’s C minor prelude C minor at 79% confidence.

A recorded example you can check

Wikipedia’s The Well-Tempered Clavier article, read on 16 October 2026, heads Book 1 No. 2 as “Prelude and Fugue in C minor, BWV 847”. The Open Well-Tempered Clavier score, MuseScore edition version 1.0 dated 19 March 2015 and marked CC0, prints three flats — B flat, E flat, A flat — between the clefs and the time signature on the first page of Praeludium 2. That is the same signature as E flat major. The recording below is the opening of that prelude. The key name comes from the article; the three flats are what that page of the score prints.

Johann Sebastian Bach, The Well-Tempered Clavier, Book 1, Prelude No. 2 in C minor, BWV 847. Kimiko Ishizaka, piano. Commons file Kimiko Ishizaka - Bach - Well-Tempered Clavier, Book 1 - 03 Prelude No. 2 in C minor, BWV 847.ogg, marked CC0. This clip is the first 20 seconds.

On 16 October 2026 this site’s key finder read this 20-second clip as C minor, Camelot 5A, at 79% confidence, and listed E flat major (5%) and C major (4%) as the next two candidates. That percentage is the finder’s estimate for this file, not a measured accuracy rate.

What our key tools tell you

When you already know a chord list, the key from chords tool names the key directly, and the circle of fifths chart shows the same keys in ring order. The analyzer reports a key from an audio file rather than from a printed signature.

Key signature chart: quick answers

What is a key signature chart?

A table pairing every possible key signature with the major and minor key it belongs to, usually with the order of its sharps or flats. This one covers all fifteen, seven flats to seven sharps.

How do I read a key signature chart?

Count the sharps or flats in your music, find that row, and read the major key and the relative minor. The two share a signature, so you pick between them by ear or by the final chord.

What is the order of sharps and flats on a chart?

Sharps are written F, C, G, D, A, E, B and flats B, E, A, D, G, C, F. A chart just shows a leading run of one of these lists.

How many keys are in a key signature chart?

Thirty names across fifteen signatures: one major and one relative minor for each. C major and A minor are the pair with no sharps or flats.

Is there a chart with all major and minor keys?

Yes, the table on this page. It gives the major key, the relative minor, and the note order for every signature in one place.

What this page leaves open