Watt to Gigawatt Converter
Power · unit-converter
Convert Watt to Gigawatt 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: Watt (w)
To: Gigawatt (gw)
About Watt
The watt is the SI unit of power (one joule per second). All linear units in this converter are defined by a fixed watt equivalent.
About Gigawatt
One gigawatt is one billion watts. Utility generation capacity and grid planning commonly use GW.
How to convert watts to gigawatts
1 watt is equal to 1.00000000e-9 gigawatt when both are expressed in watt-equivalents:
1 w = (1 W ÷ 1,000,000,000 W) gw = 1.00000000e-9 gw
Each watt is defined as 1 W and each gigawatt as 1,000,000,000 W in this tool, so one w equals 1 ÷ 1,000,000,000 gw = 1.00000000e-9 gw.
Let d(w) be the numeric value in Watt (w), and d(gw) the value in Gigawatt (gw). Then:
d(gw) = d(w) × (1 / 1,000,000,000)
Equivalently, divide by how many w fit into one gw (watts per gw divided by watts per w):
d(gw) = d(w) ÷ 1.00000000e+9
Or: gigawatt = watt ÷ 1.00000000e+9
Examples
Example #1: Convert 1 w to gigawatt
1 w = 1 w × (1/1,000,000,000) gw = 0.000000001 gw
1 w = 1 w ÷ 1.00000000e+9 = 0.000000001 gw
Intermediate watts: 1 W
Example #2: Convert 10 w to gigawatt
10 w = 10 w × (1/1,000,000,000) gw = 0.00000001 gw
10 w = 10 w ÷ 1.00000000e+9 = 0.00000001 gw
Intermediate watts: 10 W
Summary
To convert Watt to Gigawatt, multiply the value in w by the ratio of watts per w divided by watts per gw. Equivalently: value_gw = value_w × (1 / 1000000000). Numerically, 1 w equals 1e-9 gw.
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 Watt to Gigawatt is 1.000000e-9 (1 w = 1e-9 gw).
Conversion tables
| Watt (w) | Gigawatt (gw) |
|---|---|
| 0.1 | 0.0000000001 |
| 1 | 0.000000001 |
| 2 | 0.000000002 |
| 3 | 0.000000003 |
| 4 | 0.000000004 |
| 5 | 0.000000005 |
| 6 | 0.000000006 |
| 7 | 0.000000007 |
| 8 | 0.000000008 |
| 9 | 0.000000009 |
| Watt (w) | Gigawatt (gw) |
|---|---|
| 10 | 0.00000001 |
| 20 | 0.00000002 |
| 30 | 0.00000003 |
| 40 | 0.00000004 |
| 50 | 0.00000005 |
| 60 | 0.00000006 |
| 70 | 0.00000007 |
| 80 | 0.00000008 |
| 90 | 0.00000009 |
| 100 | 0.0000001 |