Chord Transposer
Transpose chords up or down by semitones. Convert between keys and adjust chord progressions to different pitches.
Positive = up, Negative = down
Transposed Chord
C
C transposed up 0 semitones
How to Use This Calculator
- Select the chord or note you want to transpose.
- Enter the number of semitones to transpose (positive = up, negative = down).
- Optionally, check "Use flats" to display results with flats instead of sharps.
- The calculator displays the transposed chord or note.
Transposition Formula
Transposition moves notes by semitones (half steps) in the chromatic scale:
Example: Transposing C up 2 semitones: C (index 0) + 2 = D (index 2). Transposing C down 2 semitones: C (index 0) - 2 + 12 = Bb (index 10).
Full Description
Transposition is the process of moving music to a different key by shifting all notes or chords by the same interval. This is essential for adapting songs to different vocal ranges, matching other instruments, or playing in more comfortable keys. Transposition preserves the relationships between notes while changing the overall pitch.
Transposition is measured in semitones (half steps), the smallest interval in Western music. Moving up 1 semitone raises the pitch by one note in the chromatic scale (C to C#), while moving down 1 semitone lowers it (C to B). Transposing by 12 semitones (one octave) returns to the same note name.
This calculator helps you transpose individual chords or notes. Enter the original note, specify how many semitones to shift, and it shows the transposed result. Use it to change song keys, adapt music to different instruments, or understand how transposition works. The calculator also offers the option to display results with flats instead of sharps, which can be more appropriate for certain keys.
Frequently Asked Questions
How do I transpose a chord?
Transposing means moving a chord up or down by a certain number of semitones (half steps). For example, transposing C up 2 semitones gives D. Transposing C down 2 semitones gives Bb (or A#).
Why would I need to transpose?
Transposing helps you change the key of a song to fit a singer's vocal range, match other instruments, or play in a more comfortable key. It's essential for adapting songs to different contexts.
What's the difference between sharps and flats?
Sharps (#) and flats (b) are different names for the same notes (enharmonic equivalents). C# and Db are the same note. The choice depends on the key signature and musical context. The calculator can show either.
How do I transpose an entire song?
Transpose each chord in the progression by the same number of semitones. For example, to transpose C-F-G up 2 semitones: D-G-A. The calculator helps you transpose individual chords, then apply the same shift to all chords in your song.