The watt (W) is the SI unit of power, equal to one joule of energy transferred per second.
Watts to Deciwatts
Convert Watt (W) to Deciwatt (dW) instantly with an exact formula, conversion table, and FAQ.
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Convert watts (W) to deciwatts (dW) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A Deciwatt (dW) equals 1/10 watt(s), a scaled unit of electrical power used for deci-scale electrical work.
dW = W × 10
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Formula
dW = W × 10
W = dW × 0.1
Conversion table
| 1 W | 10 dW |
| 5 W | 50 dW |
| 10 W | 100 dW |
| 20 W | 200 dW |
| 50 W | 500 dW |
| 100 W | 1000 dW |
| 500 W | 5000 dW |
| 1000 W | 10000 dW |
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How the formula works
Both watt and deciwatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in watts by 10 to get deciwatts. To reverse the conversion, multiply a deciwatt value by 0.1 to get back to watts.
Frequently asked questions
What is Watt (W)?
The watt (W) is the SI unit of power, equal to one joule of energy transferred per second.
What is Deciwatt (dW)?
A Deciwatt (dW) equals 1/10 watt(s), a scaled unit of electrical power used for deci-scale electrical work.
How do I convert watts to deciwatts?
Multiply the watt value by 10 to get the equivalent in deciwatts. For example, 5 W × 10 = 50 dW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 10 is an exact, non-rounded value.
Can I convert deciwatts back to watts?
Yes. Divide the deciwatt value by 10, or multiply it by 0.1, to get watts.
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About converting watts to deciwatts
The watt (W) is the SI unit of power, equal to one joule of energy transferred per second. A Deciwatt (dW) equals 1/10 watt(s), a scaled unit of electrical power used for deci-scale electrical work.
Use this calculator to move between watts and deciwatts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.