Sound Power

Calculate sound power in watts and sound power level in decibels. Includes conversions between acoustic power, sound intensity, and sound pressure levels.

Sound Power Calculator

Calculate sound power and sound power levels using standard acoustic formulas.

Key Concepts:

Sound Power (W): Energy rate emitted by a sound source
Sound Power Level (dB): Logarithmic scale relative to 10⁻¹² W reference
Sound Intensity (W/m²): Sound power per unit area
Sound Intensity Level (dB): Logarithmic scale relative to 10⁻¹² W/m² reference

Calculator

Inputs

Sound Power (W)

Sound Intensity (W/m²)

Distance from Source (m)

Sound Power Level (dB)

Results

Sound Power Level-- dB

Sound Power from Level-- W

Sound Intensity at Distance-- W/m²

Sound Intensity Level-- dB

Sound Pressure Level (approx)-- dB

Source	Sound Power (W)	Sound Power Level (dB)
Saturn Rocket	100,000,000	200
Turbo Jet Plane Engine	100,000	170
Jet Plane Take-off	1,000	150
Large centrifugal fan	100	140
Axial fan	10	130
Tractor 150 hp	1	120
Chain Saw	0.1	110
Helicopter	0.01	100
Pneumatic Jackhammer	0.001	90
Vacuum Cleaner	0.0001	80
Toilet Flushing	0.00001	70
Busy restaurant	0.000001	60
Quiet Office	0.0000001	50
Bird Singing	0.00000001	40
Quiet Conversation	0.000000001	30
Rustling leaves	0.0000000001	20
Human Breath	0.00000000001	10
Threshold	0.000000000001	0