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Milliwatt [mW] to Gigawatt [GW] Converter

Quick Reference

1 Milliwatt (mW) = 1.0000e-12 Gigawatt (GW)

1 Gigawatt (GW) = 1.0000e+12 Milliwatt (mW)

How to Convert Milliwatt to Gigawatt

1 mW = 1e-12 GW
1 GW = 1000000000000 mW

To convert Milliwatt to Gigawatt, divide the value by 1.0000e+12 (equivalently, multiply by 1.0000e-12). To convert Gigawatt back to Milliwatt, multiply by 1.0000e+12.

Example: convert 10 mW to GW:
10 mW = 10 x 1e-12 = 1e-11 GW

↔ Convert Gigawatt to Milliwatt

Milliwatt

Definition: A milliwatt (mW) is a unit of power equal to one thousandth (10⁻³) of a watt. It is a subunit of the base unit, the watt, in the International System of Units (SI).

History/origin: The watt is named in honor of Scottish inventor James Watt. The milliwatt, as a decimal multiple of the watt, was naturally derived as a smaller, more convenient unit for measuring smaller powers.

Current use: Milliwatts are used to measure small power levels in electronic circuits, audio equipment, and wireless communication devices. It's used where power consumption is low.

Gigawatt

Definition: A gigawatt (GW) is a unit of power equal to one billion (10⁹) watts. It is a multiple of the base unit, the watt, in the International System of Units (SI).

History/origin: The watt is named in honor of Scottish inventor James Watt. The gigawatt, as a decimal multiple of the watt, was derived as a very large unit for measuring the power output of massive systems.

Current use: Gigawatts are used to measure the total power generation capacity of countries, very large power plants (like nuclear or hydroelectric), and global energy consumption trends. It's used for expressing power on a very large, macroscopic scale.

Milliwatt to Gigawatt Conversion Table

Milliwatt [mW]Gigawatt [GW]
1 mW1e-12 GW
2 mW2e-12 GW
5 mW5.0000000000000005e-12 GW
10 mW1.0000000000000001e-11 GW
20 mW2.0000000000000002e-11 GW
50 mW5e-11 GW
100 mW1e-10 GW
200 mW2e-10 GW
500 mW5e-10 GW
1000 mW1e-9 GW

Common pairs of Power

Watt

Watt to MilliwattWatt to KilowattWatt to MegawattWatt to Gigawatt

Milliwatt

Milliwatt to WattMilliwatt to KilowattMilliwatt to MegawattMilliwatt to Gigawatt

Kilowatt

Kilowatt to WattKilowatt to MilliwattKilowatt to MegawattKilowatt to Gigawatt

Megawatt

Megawatt to WattMegawatt to MilliwattMegawatt to KilowattMegawatt to Gigawatt

Gigawatt

Gigawatt to WattGigawatt to MilliwattGigawatt to KilowattGigawatt to Megawatt

Milliwatt [mW] to Gigawatt [GW] Converter

To convert Milliwatt to Gigawatt, enter your value in the mW field above and the result in GW will appear instantly. You can also use the conversion factor shown in the table on this page to calculate manually. The formula is always the same: multiply your mW value by the fixed conversion ratio to get the equivalent in GW.
Our Milliwatt to Gigawatt converter uses standardized conversion factors defined by international scientific and metrological organizations. All calculations are performed with full floating-point precision. You can also choose how many decimal places to display in the result, so you get exactly the level of detail you need.
Yes, absolutely. Simply swap the source and destination units in the converter β€” select GW as your input unit and mW as your output unit. The same precision and standardized conversion factor applies in both directions.
Converting between Milliwatt and Gigawatt comes up regularly in engineering, scientific research, construction, and everyday tasks that involve measurements from different unit systems. Our converter eliminates the risk of manual calculation errors and saves time whenever you need to switch between these two units.
Yes, the Milliwatt to Gigawatt converter is completely free. No account or registration is required, and there are no usage limits. It works on any device β€” smartphones, tablets, and desktop computers β€” directly in your browser.
Milliwatt and Gigawatt are both units used to measure the same physical quantity, but they belong to different measurement systems or represent different scales. The mathematical relationship between them is fixed and constant, which is what makes accurate conversion possible. Scroll up to see the exact conversion factor, formula, and a reference table for common values.