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Acoustics Calculators
Free online acoustics calculators for sound intensity, frequency, wavelength, and musical pitch.
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Sound Intensity
Calculate decibel level, sound intensity, and pressure.
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Frequency & Pitch
Calculate frequency, period, wavelength, and note pitch.
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Sound Intensity Calculator
Calculate decibel level, sound intensity, and pressure from various sound sources
dB Level
90.00 dB
Sound Pressure (Pa)
0.632 Pa
Intensity (W/m²)
0.0010
Sound Pressure (Pa)
0.632 Pa
Intensity Ratio
10.0×
Perceived Loudness
2.0× louder
Formulas: dB = 10·log₁₀(I/I₀) · I = I₀·10^(dB/10) · p = √(I·ρ·c)
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Frequency & Pitch Calculator
Calculate frequency, period, wavelength, and note pitch from wave properties
Frequency (Hz)
100.00 Hz
Wavelength (m)
3.43 m
Wavelength (m)
0.78 m
Period (ms)
2.27 ms
Frequency
440.00 Hz
A4 — Concert pitch