• 🎼 Chord to Roman Numeral Converter

    Convert chords into Roman numerals based on their relationship to the selected key.

    Roman Numeral
    V
    Chord
    Key
    Scale Degree
    Chord Quality
    Root Note
    Scale Degree
    Roman Numeral
    Chord Quality
    💡 Tip: Roman numerals describe a chord's function within a key rather than simply naming the chord. This makes them useful for analyzing chord progressions, songwriting, music theory, and transposing progressions into different keys.
    This converter uses the major scale as the reference for scale-degree calculations. Common chord qualities and extensions are interpreted from the chord name.

  • A Chord to Roman Numeral Converter can help musicians, songwriters, producers, music students, and teachers analyze chord progressions by identifying each chord's relationship to the key. Instead of simply naming chords, Roman numeral analysis shows the scale degree and harmonic function of each chord.

    For example, in the key of C major, the progression C – Am – F – G becomes I – vi – IV – V. If you move that same progression to another key, the Roman numerals remain the same even though the actual chords change.

    Roman numeral analysis is useful for recognizing common songwriting patterns, studying harmonic movement, transposing songs, and understanding why certain chord progressions sound familiar. Uppercase Roman numerals generally represent major chords, while lowercase numerals represent minor chords. Diminished chords are commonly represented with a ° symbol.

    The converter can also identify common chord extensions such as 7ths, 6ths, and 9ths, although complex altered chords may require additional harmonic analysis.

    Tip: Once you start thinking in Roman numerals, try analyzing your favorite songs by progression rather than by individual chord names. You may discover that completely different songs use the same underlying harmonic pattern.

    Related Pages:

    Ear Training Chord Game

    Chord Transposer