Decibel-watt to Watt Converter
0 dBW is 1 W. Convert decibel-watts (dBW) to watts (W) below: type a value and the result updates as you type.
dBW to W calculator
Result
Decibel-watt to Watt conversion
1 dBW ≈ 1.258925412 Wone decibel-watt in watts
1 W = 0 dBWone watt in decibel-watts
Decibel-watt (dBW): Power level relative to one watt: 10 times the base-10 logarithm of the power in watts. 0 dBW is 1 W.
Watt (W): SI derived unit: one joule per second.
Source:Decibel-watt: IEC 60027-3:2002, Logarithmic and related quantities, and their units; Watt: SI Brochure, 9th edition (BIPM, 2019)
How to convert decibel-watts to watts
To convert decibel-watts to watts, divide the level by 10, raise 10 to that power.
Formula
W = 10^(dBW ÷ 10)
Examples
- 0 dBW = 10^(0 ÷ 10) = 1 W
- 10 dBW = 10^(10 ÷ 10) = 10 W
- 30 dBW = 10^(30 ÷ 10) = 1000 W
Decibel-watt to Watt conversion table
| Decibel-watt (dBW) | Watt (W) |
|---|---|
| -30 dBW | 0.001 W |
| -20 dBW | 0.01 W |
| -10 dBW | 0.1 W |
| 0 dBW | 1 W |
| 3 dBW | 1.995262315 W |
| 10 dBW | 10 W |
| 13 dBW | 19.95262315 W |
| 20 dBW | 100 W |
| 30 dBW | 1000 W |
| 40 dBW | 10000 W |
| 50 dBW | 100000 W |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- What is 0 dBW in W?
- 0 dBW is 1 W. To convert decibel-watts to watts, divide the level by 10, raise 10 to that power.
- How do I convert watts to decibel-watts?
- To convert watts to decibel-watts, take the base-10 logarithm of the amount, then multiply by 10. The formula is dBW = 10 × log₁₀(W).
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 1 is exact. Displayed results are only rounded when they have many decimal places.