Information about the augmented fifth interval

Name

This interval is called: Augmented fifth

Abbreviation

You can use the somewhat shorter name "A5" to indicate a Augmented fifth.

Construct

How to build a augmented fifth interval?

To construct an interval correctly you must always use two steps.

  1. Count the amount of naturals used
  2. Count the steps between de two notes

At first, and with easy intervals, this may seem unnecessary, but when advancing to more dificult intervals and musical keys they will become more mandatory.

The following example is for a augmented fifth from C3. Outcome: G#3

1.
A Augmented fifth uses 5 naturals.
Example: C3 D3 E3 F3 G3
2.
A Augmented fifth has 8 semitones between the notes.
Example: C3 C#3 D3 D#3 E3 F3 F#3 G3 G#3

Cheatsheet

Tranposed for each note

You can use the following cheatsheet to check the Augmented fifth for each root note.
Cb3 ↠ G3
C3 ↠ G3
C3 ↠ G#3
C3 ↠ G3
C#3 ↠ G##3
C3 ↠ G3
Db3 ↠ A3
D3 ↠ A3
D3 ↠ A#3
D3 ↠ A3
D#3 ↠ A##3
D3 ↠ A3
Eb3 ↠ B3
E3 ↠ B3
E3 ↠ B#3
E3 ↠ B3
E#3 ↠ B##3
E3 ↠ B3
Fb3 ↠ C4
F3 ↠ C4
F3 ↠ C#4
F3 ↠ C4
F#3 ↠ C##4
F3 ↠ C4
Gb3 ↠ D4
G3 ↠ D4
G3 ↠ D#4
G3 ↠ D4
G#3 ↠ D##4
G3 ↠ D4
Ab3 ↠ E4
A3 ↠ E4
A3 ↠ E#4
A3 ↠ E4
A#3 ↠ E##4
A3 ↠ E4
Bb3 ↠ F#4
B3 ↠ F4
B3 ↠ F##4
B3 ↠ F4
B#3 ↠ F###4
B3 ↠ F#4