milliwatt
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The milliwatt is exactly one thousandth of a watt, an exact SI prefix relation. It is the working unit of radio transmit power, laser output and low-power electronics. Radio and optical work often quotes it logarithmically as dBm, where 0 dBm is exactly 1 mW.
Watch out: Take care with the symbol. Lowercase mW is the milliwatt and uppercase MW is the megawatt, a factor of 10⁹ apart. Case is load-bearing in SI symbols and this pair is the most consequential collision in the power units.
| 1 | 0.001 |
One milliwatt in every power unit
| 1,000,000 | nanowatt (nW) | |
| 10,000 | erg per second (erg/s) | |
| 1,000 | microwatt (μW) | |
| 1 | milliwatt (mW)this unit | |
| 0.0442537 | foot pound-force per minute (ft·lbf/min) | |
| 0.00341214 | BTU per hour (BTU/h) | |
| 0.001 | watt (W) | |
| 0.000859845 | kilocalorie per hour (kcal/h) | |
| 0.000737562 | foot pound-force per second (ft·lbf/s) | |
| 0.00000341214 | thousand BTU per hour (MBH) | |
| 0.00000135962 | metric horsepower (PS) | |
| 0.00000134102 | horsepower (mechanical) (hp) | |
| 0.00000134048 | electrical horsepower (hp (elec)) | |
| 0.000001 | kilowatt (kW) | |
| 2.84345e-07 | ton of refrigeration (ton) | |
| 1.01942e-07 | boiler horsepower (bhp) | |
| 3.41214e-09 | million BTU per hour (MMBTU/h) | |
| 1.00000e-09 | megawatt (MW) | |
| 1.00000e-12 | gigawatt (GW) | |
| 1.00000e-15 | terawatt (TW) | |
| 2.61233e-30 | solar luminosity (Lsun) |
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