9 watts
9 WPower · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Power
Just how powerful is 9 watts?
Around the home
9 W
ENERGY EACH SECOND
9 watts
The quantity is exact as entered.
9 WPower
0
0
Power is energy per unit time: one watt is one joule per second.
A little perspective
9 watts is approximately equal to the power of an LED bulb.
Measurements, assumptions & sources +
9 watts
Power: 9 W; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
LED bulb
Power: 9 W; example.
A chosen 9 W electrical input; brightness is a separate measurement.
Defined examples — our methodology
The marked power is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
Compare 9 watts with the power of an LED bulb. The notes below explain how each value was chosen.
LED bulb
9 WPower · example
A chosen 9 W electrical input; brightness is a separate measurement.
- Comparing
- Power ↔ Power
- Relative size
- 9 watts is approximately equal to the power of an LED bulb.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- The power of an LED bulb: This is an illustrative comparison value, not a claim that every example is the same.
Power is the rate of energy transfer or use, not the total energy.
0.012069 hpmechanical horsepower
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