Milliwatt to Kilowatt Converter
Power · unit-converter
Convert Milliwatt to Kilowatt with a fixed input and output unit, step-by-step formula line, and reference tables. Linear units use SI watt definitions; mechanical hp uses 550 ft·lbf/s; BTU/h uses the IT BTU; dBm/dBW are logarithmic relative to 1 mW and 1 W. The full Power Converter also includes PS/CV, TR, kVA/MVA, and ft·lb/s.
Calculator
From: Milliwatt (mw)
To: Kilowatt (kw)
About Milliwatt
One milliwatt is one thousandth of a watt. Common in RF, fiber optics, and low-power electronics.
About Kilowatt
One kilowatt is 1,000 W. Motor, heater, and grid-scale loads are often rated in kW.
How to convert milliwatts to kilowatts
1 milliwatt is equal to 0.000001 kilowatt when both are expressed in watt-equivalents:
1 mw = (0.001 W ÷ 1,000 W) kw = 0.000001 kw
Each milliwatt is defined as 0.001 W and each kilowatt as 1,000 W in this tool, so one mw equals 0.001 ÷ 1,000 kw = 0.000001 kw.
Let d(mw) be the numeric value in Milliwatt (mw), and d(kw) the value in Kilowatt (kw). Then:
d(kw) = d(mw) × (0.001 / 1,000)
Equivalently, divide by how many mw fit into one kw (watts per kw divided by watts per mw):
d(kw) = d(mw) ÷ 1000000
Or: kilowatt = milliwatt ÷ 1000000
Examples
Example #1: Convert 1 mw to kilowatt
1 mw = 1 mw × (0.001/1,000) kw = 0.000001 kw
1 mw = 1 mw ÷ 1000000 = 0.000001 kw
Intermediate watts: 0.001 W
Example #2: Convert 10 mw to kilowatt
10 mw = 10 mw × (0.001/1,000) kw = 0.00001 kw
10 mw = 10 mw ÷ 1000000 = 0.00001 kw
Intermediate watts: 0.01 W
Summary
To convert Milliwatt to Kilowatt, multiply the value in mw by the ratio of watts per mw divided by watts per kw. Equivalently: value_kw = value_mw × (0.001 / 1000). Numerically, 1 mw equals 0.000001 kw.
Relationship context
Both units are SI / decimal power (watts and prefixes). Conversions use fixed watt factors, so results stay consistent with the definitions in this converter. The factor from Milliwatt to Kilowatt is 1.000000e-6 (1 mw = 0.000001 kw).
Conversion tables
| Milliwatt (mw) | Kilowatt (kw) |
|---|---|
| 0.1 | 0.0000001 |
| 1 | 0.000001 |
| 2 | 0.000002 |
| 3 | 0.000003 |
| 4 | 0.000004 |
| 5 | 0.000005 |
| 6 | 0.000006 |
| 7 | 0.000007 |
| 8 | 0.000008 |
| 9 | 0.000009 |
| Milliwatt (mw) | Kilowatt (kw) |
|---|---|
| 10 | 0.00001 |
| 20 | 0.00002 |
| 30 | 0.00003 |
| 40 | 0.00004 |
| 50 | 0.00005 |
| 60 | 0.00006 |
| 70 | 0.00007 |
| 80 | 0.00008 |
| 90 | 0.00009 |
| 100 | 0.0001 |