Enter two notes (like C4 and G4) to find the exact musical interval between them.
Note A: Note B:
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How It Works
Each note is converted to a semitone number, the distance between the two is measured in semitones, and that distance is matched to its interval name (like Major 3rd or Perfect 5th), with octaves counted separately for wider gaps.
How to Use This Tool
- Enter the first note using letter and octave, like C4 or F#3.
- Enter the second note the same way.
- Click Identify to see the semitone distance and interval name.
The order of the two notes does not matter; the tool reports the interval size regardless of which note is higher.
Did You Know?
- The interval of a Perfect 5th (7 semitones) is the basis for power chords used widely in rock guitar.
- A Tritone (6 semitones) splits the octave exactly in half and was historically nicknamed “the devil’s interval” for its dissonant sound.
Frequently Asked Questions
What note format should I use?
Use a letter A through G, an optional sharp (#) or flat (b), and an octave number, such as A3, C#4, or Bb2.
Does it handle intervals wider than an octave?
Yes, the result shows the number of full octaves plus the remaining interval within the final octave.