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Both calculators run independently — change the inputs on either side to compare results.

Harmonic Frequency Calculator

Find the frequency of any harmonic overtone by multiplying a fundamental frequency by the harmonic number. Used by musicians, acousticians, and engineers tuning instruments or analyzing resonance.

Fundamental Frequency (Hz)

Harmonic Number

Fill in the required fields to see your result.

Music

Band EQ Frequency Calculator

Compute the effective frequency response of bell, high-pass, and shelf EQ bands given centre frequency, Q factor, and gain. Use it when setting up an equaliser in a mix or mastering session.

Center Frequency (Hz)

Q Factor (Bandwidth) (Q)

Gain Adjustment (dB)

EQ Type

Fill in the required fields to see your result.

Key differences

	Harmonic Frequency Calculator	Band EQ Frequency Calculator
Category	Music	Music
Inputs required	2	4
Result	Harmonic Frequency (Hz)	Affected Frequency Range (Hz)
What it does	Find the frequency of any harmonic overtone by multiplying a fundamental frequency by the harmonic number. Used by musicians, acousticians, and engineers tuning instruments or analyzing resonance.	Compute the effective frequency response of bell, high-pass, and shelf EQ bands given centre frequency, Q factor, and gain. Use it when setting up an equaliser in a mix or mastering session.