Power Converter

Convert between watts and other practical power units.

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Related Conversions
10 mW to GW 25 mW to GW 100 mW to GW 250 mW to GW 357 mW to GW 401 mW to GW 491 mW to GW 500 mW to GW 535 mW to GW 714 mW to GW 1,070 mW to GW 1,784 mW to GW
Reverse Conversions
1 GW to mW 5 GW to mW 20 GW to mW 50 GW to mW 150 GW to mW 200 GW to mW 250 GW to mW 491 GW to mW 535 GW to mW 750 GW to mW 892 GW to mW 4,460 GW to mW
More Power Conversions
5 kW to hp 100 kW to hp 250 hp to kW 500 W to BTU/h 500 hp to kW 1,000 kW to hp 1,500 W to BTU/h 3,000 hp to kW 5,000 BTU/h to W 10,000 hp to kW 18,000 BTU/h to kW 24,000 BTU/h to kW

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Common Benchmarks

Hair dryer 1800 W
LED bulb 10 W
Air conditioner 3500 W
Car engine 100 hp
Electric kettle 1500 W
Microwave 1000 W

Formula

GW = MW × 0.001

Example

Example: convert 446 megawatts to gigawatts.

446 MW = 0.446 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: 446 MW → 0.446 GW

Frequently Asked Questions

How much is 446 megawatts in gigawatts?

446 megawatts equals 0.446 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.