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Bdim7 Guitar Chord

B diminished seventh (Bdim7) is made of the notes B D F A♭. Here are 3 ways to play it on guitar, starting with the easiest.

How to play Bdim7 on guitar

  1. Shape 1

    Open position

    3 1 2 B D A♭ B F

    x20101

  2. Shape 2

    Barre at fret 7

    7fr 1 2 3 4 B F B D A♭ B

    789797

  3. Shape 3

    Barre at fret 12

    12fr 1 4 2 3 B D A♭ B F

    x-14-12-13-12-13

Notes in Bdim7

Formula 1 ♭3 ♭5 ♭♭7
DegreeNote
1B
♭3D
♭5F
♭♭7A♭

Shape 1 step by step

  1. Put your ring finger on string 5 at fret 2.
  2. Put your index finger on string 3 at fret 1.
  3. Put your middle finger on string 1 at fret 1.
  4. Let strings 4, 2 ring open.
  5. Don’t play string 6.
  6. Strum from string 5 to string 1.

Shape 2 step by step

  1. Lay your index finger flat across strings 6 to 1 at fret 7.
  2. Put your middle finger on string 5 at fret 8.
  3. Put your ring finger on string 4 at fret 9.
  4. Put your little finger on string 2 at fret 9.
  5. Strum from string 6 to string 1.

Tune your guitar first

A chord only sounds right when your instrument is in tune. Check your strings with the free online tuner before you practise. Open the guitar tuner

Frequently asked questions

What notes are in the Bdim7 chord?

B diminished seventh has the notes B D F A♭. Its formula is 1 ♭3 ♭5 ♭♭7. The numbers are steps of the major scale, counted from the root.

What is the easiest way to play Bdim7 on guitar?

Start with shape 1 (open position), written as x20101 from string 6 to string 1. Here x means you don’t play that string and 0 means it rings open.

What is the difference between Bdim7 and Bm7♭5?

Bdim7 has the notes B D F A♭, and Bm7♭5 has B D F A. The only difference is that Bdim7 has A♭ where Bm7♭5 has A.

Diminished 7th chords in every key

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