Cents Between 440 Hz and 880 Hz
The interval from 440 Hz (A4) to 880 Hz (A5) is exactly 1200 cents, one octave.
How to use this tool
- Enter frequency 1 and frequency 2 in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your interval and the full breakdown beneath it.
440 Hz to 880 Hz spans exactly one octave — 1200 cents — making it the canonical octave interval example.
Frequently asked questions
- How many cents is one semitone?
- Exactly 100 cents. An octave spans 1200 cents (12 × 100).
- How do I use this for tuning?
- Enter the reference pitch and the measured pitch. If cents offset is within ±5 ¢ the instrument is in tune.