Sound Converter
Convert between decibels, frequency, wavelength, and sound pressure levels
How to Use
1
Enter a sound measurement value in any input field
2
All other units update automatically in real-time
3
Perfect for audio engineering and acoustics applications
Conversion Formulas
λ = c ÷ f (wavelength = speed of sound ÷ frequency)
c = 343 m/s (speed of sound at 20°C)
SPL (dB) = 20 × log₁₀(P/P₀)
P₀ = 20 µPa (reference pressure)
FAQ
What is the speed of sound?
The speed of sound in air at 20°C (68°F) is approximately 343 meters per second (1,125 ft/s). It varies with temperature, humidity, and altitude.
What is decibel (dB)?
The decibel is a logarithmic unit used to express the ratio of two values of a physical quantity, usually power or intensity. It's commonly used to measure sound levels.
What is audible frequency range?
The typical human hearing range is approximately 20 Hz to 20,000 Hz (20 kHz). This range decreases with age, especially at higher frequencies.