Chord Inversion Calculator
Build chord inversions in any key with root position, first, second, and third inversion notes plus slash chord notation.
What Is a Chord Inversion?
A chord inversion changes which note sits in the bass. Root position keeps the chord root lowest. First inversion puts the third in the bass, second inversion puts the fifth, and third inversion puts the seventh.
Slash Chord Notation
Modern notation writes inversions as slash chords: chord name, slash, bass note. C major in first inversion (E-G-C) is written C/E.
G dominant seventh in first inversion (B-D-F-G) is G7/B. The bass note after the slash is the lowest sounding pitch.
Related tools: Chord Calculator, Chord Finder, and BPM Calculator.
Frequently Asked Questions
What are the notes of C major in first inversion?
First inversion of C major is E-G-C, written C/E. The third (E) becomes the bass note.
How many inversions does a triad have?
A triad has three positions: root, first inversion, and second inversion. Each moves a different chord tone to the bass.
How many inversions does a seventh chord have?
A seventh chord has four inversions because it contains four notes. The fourth inversion places the seventh in the bass.
What is the difference between inversion and voicing?
Inversion only changes the bass note. Voicing also rearranges upper notes into different octaves without changing the inversion label.
What are G7 notes in third inversion?
G7 in third inversion has F in the bass: F-G-B-D, written G7/F.
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