Cents Between 261 Hz (C4) and 440 Hz (A4)
The interval from C4 (≈261.6 Hz) to A4 (440 Hz) is approximately 900 cents, a major sixth.
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.
Middle C (roughly 262 Hz) to concert A (440 Hz) spans a major sixth, about 900 cents in equal temperament.
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.