Transposition Calculator
Transpose music between keys.
Select a key and interval to see all notes in the new key.
Transposed Key & Notes
Transposition shifts all notes in a piece of music up or down by the same interval.
How it works:
New Note = Original Note + Interval (in semitones)
Semitone intervals:
| Interval | Semitones |
|---|---|
| Minor 2nd | 1 |
| Major 2nd | 2 |
| Minor 3rd | 3 |
| Major 3rd | 4 |
| Perfect 4th | 5 |
| Tritone | 6 |
| Perfect 5th | 7 |
| Minor 6th | 8 |
| Major 6th | 9 |
| Minor 7th | 10 |
| Major 7th | 11 |
| Octave | 12 |
Common transpositions:
- Guitar capo on fret 2 = transpose up 2 semitones
- Bb trumpet sounds a major 2nd lower than written (transpose up 2 to write)
- Eb alto sax sounds a major 6th lower than written (transpose up 9 to write)