Tuning Fork Reference Calculator
Music & AudioCalculate how many cents your measured frequency deviates from standard A440 concert pitch.
Cents Deviation from A440
How many cents sharp (positive) or flat (negative) this frequency is compared to standard A440 concert pitch.
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Frequently Asked Questions
What is a cent in music tuning?
A cent is one hundredth of a semitone, the smallest commonly used unit for measuring fine pitch differences — there are 1,200 cents in one octave, making it a precise way to describe small tuning deviations.
Why do some orchestras tune to A442 instead of A440?
Some European orchestras use a slightly higher reference pitch, such as A442 or A443, believing it produces a brighter overall sound — there is no universal requirement, though A440 remains the most common international standard.
How many cents difference is noticeable to the human ear?
Most trained listeners can detect pitch differences as small as 5 to 10 cents, while differences under about 5 cents are generally difficult for even experienced musicians to perceive reliably.
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