๐ต Cents (Pitch Interval) Calculator
Cents1,200 ยข
Enter two frequencies to calculate the pitch interval between them in cents (a logarithmic unit dividing the octave into 1200 parts), or convert a cents value back into a frequency ratio. Useful for checking piano tuning or pitch adjustments on audio equipment.
How to use
- Choose "frequency to cents" or "cents to frequency ratio" mode.
- Enter two frequencies, or a cents value.
- The result is calculated automatically.
FAQ
What is a cent?
A logarithmic unit of pitch interval, defined so that an equal-tempered semitone is 100 cents and an octave is 1200 cents.
What formula does this use?
Cents = 1200 ร log2(f2/f1), the standard formula used in acoustics.
Why is an octave exactly 1200 cents?
An octave is a 2:1 frequency ratio, so 1200 ร log2(2/1) = 1200 ร 1 = 1200 cents.