Free Resonance Frequency Calculator
Calculate the resonant frequency of an open or closed pipe using f = n * v / (2 * L) for open pipes.
m/s
m
Open Pipe Frequency
343.00 Hz
Closed Pipe Frequency (odd n)171.50 Hz
Open Pipe Frequency vs Harmonic Number (n)
Resonance in Pipes
Standing waves form in pipes at specific frequencies determined by the pipe length and boundary conditions.
Open Pipe (both ends open)
f_n = n * v / (2L) where n = 1, 2, 3, ...
Closed Pipe (one end closed)
f_n = n * v / (4L) where n = 1, 3, 5, ... (odd harmonics only)
Example Calculation
Fundamental frequency of a 0.5 m open pipe at 343 m/s.
- 01f_open = n * v / (2L)
- 02f_open = 1 * 343 / (2 * 0.5)
- 03f_open = 343 Hz
- 04f_closed = 1 * 343 / (4 * 0.5)
- 05f_closed = 171.5 Hz
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