Gigawatt to Milliwatt Converter
Power · unit-converter
Convert Gigawatt to Milliwatt 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: Gigawatt (gw)
To: Milliwatt (mw)
About Gigawatt
One gigawatt is one billion watts. Utility generation capacity and grid planning commonly use GW.
About Milliwatt
One milliwatt is one thousandth of a watt. Common in RF, fiber optics, and low-power electronics.
How to convert gigawatts to milliwatts
1 gigawatt is equal to 1.00000000e+12 milliwatt when both are expressed in watt-equivalents:
1 gw = (1,000,000,000 W ÷ 0.001 W) mw = 1.00000000e+12 mw
Each gigawatt is defined as 1,000,000,000 W and each milliwatt as 0.001 W in this tool, so one gw equals 1,000,000,000 ÷ 0.001 mw = 1.00000000e+12 mw.
Let d(gw) be the numeric value in Gigawatt (gw), and d(mw) the value in Milliwatt (mw). Then:
d(mw) = d(gw) × (1,000,000,000 / 0.001)
Equivalently, divide by how many gw fit into one mw (watts per mw divided by watts per gw):
d(mw) = d(gw) ÷ 1.00000000e-12
Or: milliwatt = gigawatt ÷ 1.00000000e-12
Examples
Example #1: Convert 1 gw to milliwatt
1 gw = 1 gw × (1,000,000,000/0.001) mw = 1000000000000 mw
1 gw = 1 gw ÷ 1.00000000e-12 = 1000000000000 mw
Intermediate watts: 1,000,000,000 W
Example #2: Convert 10 gw to milliwatt
10 gw = 10 gw × (1,000,000,000/0.001) mw = 10000000000000 mw
10 gw = 10 gw ÷ 1.00000000e-12 = 10000000000000 mw
Intermediate watts: 10,000,000,000 W
Summary
To convert Gigawatt to Milliwatt, multiply the value in gw by the ratio of watts per gw divided by watts per mw. Equivalently: value_mw = value_gw × (1000000000 / 0.001). Numerically, 1 gw equals 1000000000000 mw.
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 Gigawatt to Milliwatt is 1.000000e+12 (1 gw = 1000000000000 mw).
Conversion tables
| Gigawatt (gw) | Milliwatt (mw) |
|---|---|
| 0.1 | 100,000,000,000 |
| 1 | 1,000,000,000,000 |
| 2 | 2,000,000,000,000 |
| 3 | 3,000,000,000,000 |
| 4 | 4,000,000,000,000 |
| 5 | 5,000,000,000,000 |
| 6 | 6,000,000,000,000 |
| 7 | 7,000,000,000,000 |
| 8 | 8,000,000,000,000 |
| 9 | 9,000,000,000,000 |
| Gigawatt (gw) | Milliwatt (mw) |
|---|---|
| 10 | 10,000,000,000,000 |
| 20 | 20,000,000,000,000 |
| 30 | 30,000,000,000,000 |
| 40 | 40,000,000,000,000 |
| 50 | 50,000,000,000,000 |
| 60 | 60,000,000,000,000 |
| 70 | 70,000,000,000,000 |
| 80 | 80,000,000,000,000 |
| 90 | 90,000,000,000,000 |
| 100 | 100,000,000,000,000 |