Convert Terawatts to Watts

Convert terawatts (TW) to watts (W) in seconds with clear, accurate results. Enter a value in terawatts to see the exact watt equivalent for power, energy output, and engineering work.

Terawatts

Watts to Terawatts

How many terawatts in a watts?

In 1 terawatts there are 1,000,000,000,000 watts. Meanwhile in 1 watts there are 1.00000e-12 terawatts. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Watts to Terawatts calculator above to convert any number.

* Values rounded to 6 decimal places for readability

How to convert terawatts to watts?

To convert terawatts (TW) to watts (W), use the metric prefix rule: tera- means 10¹². That means 1 terawatt equals 1,000,000,000,000 watts.

Conversion formula: W = TW × 10¹²
Quick rule: move the decimal 12 places to the right

Examples

0.5 TW = 0.5 × 10¹² = 500,000,000,000 W
2.3 TW = 2.3 × 10¹² = 2,300,000,000,000 W

This terawatt to watt conversion works for any value in TW, since watts are the base unit of power in the metric system.

Frequently asked questions

How many watts are in 1 terawatt (TW)?

1 terawatt equals 1,000,000,000,000 watts. That’s 10¹² watts.

What is the formula to convert terawatts to watts?

Use this formula:
W = TW × 10¹²
Multiply terawatts by 1,000,000,000,000 to get watts.

How do you convert terawatts to watts by hand?

Write the terawatt value, then multiply by 1,000,000,000,000.
Example: 2 TW × 1,000,000,000,000 = 2,000,000,000,000 W.

Why is 1 terawatt equal to 10¹² watts?

The prefix tera- means 10¹² in the metric system. A watt is the base unit, so 1 TW = 10¹² W.

What are common terawatt to watt conversions?

Here are quick conversions many people use:

0.001 TW = 1,000,000,000 W (1 billion watts)
0.01 TW = 10,000,000,000 W (10 billion watts)
0.1 TW = 100,000,000,000 W (100 billion watts)
1 TW = 1,000,000,000,000 W (1 trillion watts)
5 TW = 5,000,000,000,000 W (5 trillion watts)

Can terawatts be converted to watts for any type of power?

Yes. Terawatts and watts both measure power. The conversion works the same for electric grids, solar output, wind power, and heat power, as long as the value is power in TW.

Is converting terawatts to watts the same as converting energy?

No. Watts and terawatts measure power, which is energy per second.
Energy uses units like watt-hours (Wh), kilowatt-hours (kWh), or joules (J). To convert power to energy, you also need time.

What’s the difference between a watt and a terawatt?

A watt (W) is a small unit of power. A terawatt (TW) is huge.
1 TW = 1 trillion watts, so terawatts are used for large-scale power, like national or global totals.

How do you convert fractional terawatts to watts?

Convert the same way, by multiplying by 10¹².
Example: 0.25 TW × 10¹² = 250,000,000,000 W.

How do you convert terawatts to watts using scientific notation?

Multiply by 10¹² and keep the number in scientific form.
Example: 3.6 TW = 3.6 × 10¹² W.

Are watts and terawatts part of the SI system?

Yes. The watt (W) is an SI unit of power. Terawatt (TW) is the watt with the SI prefix tera-.

What unit is bigger than a terawatt?

The next common SI step above terawatt is petawatt (PW).
1 PW = 10¹⁵ W, which is 1,000 TW.

How does this converter work?

The Calculate Box tool to convert terawatts to watts uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a terawatts value in the box and have it instantly converted to watts.