Harmonic Series of Middle C (261 Hz) — 8 Harmonics
Calculate the first 8 harmonics of middle C at approximately 261.6 Hz.
How to use this tool
- Enter fundamental frequency and number of harmonics in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your harmonic frequencies and the full breakdown beneath it.
Middle C's harmonic series reveals the overtone structure that gives piano and orchestral instruments their characteristic timbre.
Frequently asked questions
- What is the harmonic series?
- The harmonic series is the sequence of frequencies that are integer multiples of a fundamental: f, 2f, 3f, 4f, ... These overtones give instruments their characteristic tone colour.
- Which harmonic is the octave?
- The 2nd harmonic (2× fundamental) is exactly one octave above. The 3rd harmonic is an octave + perfect fifth above.