Music Interval Calculator

Find the interval in semitones between two pitches.

Interval (semitones) 7.02

Interval (cents) 701.96

Formula: semitones = 12 × log₂(f₂ ÷ f₁)

Step-by-step with your numbers:

1. Values used:

2. Frequency 1 = 440 Hz

3. Frequency 2 = 660 Hz

5. Interval = 7.02semitones

6. Interval = 701.96cents

Did we solve your problem today?

Measure the musical distance between two frequencies.

The math behind it

semitones = 12 × log₂(f₂ ÷ f₁). 1 semitone = 100 cents.

440 → 660 Hz → ~7 semitones (a perfect fifth).

Cents?

A finer unit — 100 cents per semitone, used for tuning.