A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work.
Milliwatts to Deciwatts
Convert Milliwatt (mW) to Deciwatt (dW) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Electrical calculator
Electricity Converter
Convert milliwatts (mW) 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 = mW × 0.01
Results update instantly for Milliwatts to Deciwatts conversions.
Reserved above the conversion cards and below the converter.
Formula
dW = mW × 0.01
mW = dW × 100
Conversion table
| 1 mW | 0.01 dW |
| 5 mW | 0.05 dW |
| 10 mW | 0.1 dW |
| 20 mW | 0.2 dW |
| 50 mW | 0.5 dW |
| 100 mW | 1 dW |
| 500 mW | 5 dW |
| 1000 mW | 10 dW |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both milliwatt and deciwatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in milliwatts by 0.01 to get deciwatts. To reverse the conversion, multiply a deciwatt value by 100 to get back to milliwatts.
Frequently asked questions
What is Milliwatt (mW)?
A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work.
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 milliwatts to deciwatts?
Multiply the milliwatt value by 0.01 to get the equivalent in deciwatts. For example, 5 mW × 0.01 = 0.05 dW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 0.01 is an exact, non-rounded value.
Can I convert deciwatts back to milliwatts?
Yes. Divide the deciwatt value by 0.01, or multiply it by 100, to get milliwatts.
Reserved between the FAQ and the article so the page stays balanced.
About converting milliwatts to deciwatts
A Milliwatt (mW) equals 1/1,000 watt(s), a scaled unit of electrical power used for milli-scale electrical work. 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 milliwatts 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.