Power Converter

Convert between watts and other practical power units.

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Related Conversions
1 mW to GW 25 mW to GW 50 mW to GW 150 mW to GW 200 mW to GW 205 mW to GW 230 mW to GW 500 mW to GW 1,000 mW to GW 1,024 mW to GW 2,560 mW to GW 5,120 mW to GW
Reverse Conversions
1 GW to mW 5 GW to mW 20 GW to mW 50 GW to mW 75 GW to mW 150 GW to mW 230 GW to mW 250 GW to mW 512 GW to mW 750 GW to mW 2,560 GW to mW 5,120 GW to mW
More Power Conversions
1 BTU/h to W 5 kW to hp 50 kW to hp 150 W to BTU/h 300 hp to kW 750 W to BTU/h 1,000 kW to hp 2,000 hp to kW 2,500 hp to kW 5,000 BTU/h to W 18,000 BTU/h to kW 100,000 W to BTU/h

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Common Benchmarks

Phone fast charge 30 W
Microwave 1000 W
Toaster 1200 W
E-bike motor 500 W
Electric kettle 1500 W
Car engine 100 hp

Formula

GW = MW × 0.001

Example

Example: convert 256 megawatts to gigawatts.

256 MW = 0.256 GW

Conversion table

megawatts (MW) gigawatts (GW)
1 MW 0.001 GW
2 MW 0.002 GW
5 MW 0.005 GW
10 MW 0.01 GW
20 MW 0.02 GW
50 MW 0.05 GW
100 MW 0.1 GW

Explanation

These are both units.

How to convert megawatts to gigawatts

  1. Start with the value in megawatts (MW).
  2. Multiply it by 0.001.
  3. The result is the measurement in gigawatts (GW).

Example: 256 MW → 0.256 GW

Frequently Asked Questions

How much is 256 megawatts in gigawatts?

256 megawatts equals 0.256 gigawatts.

How many gigawatts is 1 megawatt?

1 megawatt equals 0.001 gigawatts.

How many megawatts is 1 gigawatt?

1 gigawatt equals 1000 megawatts.

What is the difference between megawatts and gigawatts?

Both measure power, but they are commonly used in different contexts. The watt (W) is the SI unit and is widely used in electrical/device specs, while horsepower (hp) is a traditional unit often used to describe engines and machinery.

Where are megawatts and gigawatts used?

Watts are common in electrical power/consumption (devices, appliances, lighting). Horsepower is commonly used for mechanical power (engines, pumps, compressors, machinery).

Why does 1 megawatt equal 0.001 gigawatts?

Because power units are defined with a fixed relationship, which determines the conversion factor.