What Note is 261.63 Hz?
261.63 Hz is the note C4, commonly known as Middle C.
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- Enter frequency in the fields above.
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- Read your nearest note and the full breakdown beneath it.
261 Hz is closest to C4 (Middle C), the central reference note on a piano.
Frequently asked questions
- What note is 432 Hz?
- 432 Hz is A4 minus about 31.77 cents — roughly a third of a semitone below A440.
- What does cents offset mean?
- One semitone = 100 cents. A positive offset means the frequency is sharp; negative means flat.