03/03/2023, hardwarebee
Watt (W) and dBm (decibel-milliwatt) are both units of power, but they are on different scales. Watt is an absolute unit of power, while dBm is a relative unit of power relative to 1 milliwatt (mW).
To convert watts to dBm, you can use the following formula:
dBm = 10 x log10 (P/1mW)
where P is the power in watts.
For example, if you want to convert 1 watt to dBm, you would do:
dBm = 10 x log10 (1/0.001)
= 10 x log10 (1000)
= 10 x 3
= 30 dBm
So 1 watt is equal to 30 dBm.
Similarly, you can use this formula to convert any power in watts to dBm.
Here’s a table with some examples of power values converted from watts to dBm:
Power (W) | Power (dBm) |
---|---|
1 | 30 dBm |
5 | 37 dBm |
10 | 40 dBm |
25 | 44 dBm |
50 | 47 dBm |
100 | 50 dBm |
250 | 54 dBm |
500 | 57 dBm |
1000 | 60 dBm |
As you can see, the dBm values increase as the power values increase, but the rate of increase is not linear – a doubling of power results in an increase of 3 dBm, not 1 dBm.