Learn music theory with Sonid app icon

Information about the perfect fourth interval

Name

This is the perfect fourth interval.

Abbreviation

This interval is abbreviated with P4.

Practice the P4 interval

Open the app and start your daily workout!

learn music theory with sonid app logofor iOS and Android

Construct

How to construct the perfect fourth interval?

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

1 • Count the amount of naturals used
2 • Count the semitone steps between the two notes

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

The following example is for a minor second from C3. Outcome: F3

1 • The perfect fourth spans 4 naturals.
C3  ↠  D3  ↠  E3  ↠  F3
2 • The perfect fourth has 5 semitones between the notes.
C3  ↠  C3  ↠  D3  ↠  D3  ↠  E3  ↠  F3

Cheatsheet

The perfect fourth transposed from each note

C
F
C
F
C
F
D
G
D
G
D
G
E
A
E
A
E
A
F
B
F
B
F
B
G
C
G
C
G
C
A
D
A
D
A
D
B
E
B
E
B
E

Practice the P4 interval

Open the app and start your daily workout!

learn music theory with sonid app logofor iOS and Android

Chords

Which chords use the perfect fourth interval?

Scales

Which scales use the perfect fourth interval?

Related articles

Lida van der Eijk
2 months ago

We've made a new Spotify Playlist for you guys! This time we take a look at the perfect fourth and teach you how to identify it by ear.

Sonid
5 months ago

A series of videos to explain music theory in small chunks of information. Part 7 - Perfect Fourth