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.
What is a decibel-watt?
- Symbol
- dBW
- Quantity
- Power Level (dBm, dBW)
- Unit system
- other
- Definition
- Power level relative to one watt: 10 times the base-10 logarithm of the power in watts. 0 dBW is 1 W.
- Exact
- Yes, the value is exact by definition
- Source
- IEC 60027-3:2002, Logarithmic and related quantities, and their units
Common applications
Used for the transmit power of broadcast and satellite equipment. 0 dBW is 1 W and 30 dBW is 1 kW.
Decibel-watt in other power level (dbm, dbw) units
- mW = 1000 × 10^(dBW ÷ 10)Milliwatt
- W = 10^(dBW ÷ 10)Decibel-watt to Watt converter
- kW = 0.001 × 10^(dBW ÷ 10)Kilowatt
- µW = 1000000 × 10^(dBW ÷ 10)Microwatt
- dBm = dBW + 30Decibel-watt to Decibel-milliwatt converter
Decibel-watt quick reference
| Decibel-watt | Watt | Decibel-milliwatt | Milliwatt |
|---|---|---|---|
| -30 dBW | = 0.001 W | = 0 dBm | = 1 mW |
| -20 dBW | = 0.01 W | = 10 dBm | = 10 mW |
| -10 dBW | = 0.1 W | = 20 dBm | = 100 mW |
| 0 dBW | = 1 W | = 30 dBm | = 1000 mW |
| 3 dBW | ≈ 1.995262315 W | = 33 dBm | ≈ 1995.262315 mW |
| 10 dBW | = 10 W | = 40 dBm | = 10000 mW |