How do you convert terawatts to megawatts?

To convert terawatts (TW) to megawatts (MW), multiply the power in terawatts by 1,000,000 (megawatts = terawatts × 1,000,000).

What is 5 terawatts in megawatts?

5 terawatts (5 TW) is equal to 5,000,000 megawatts (5,000,000 MW).

Which is larger, 1 terawatt (TW) or 1 megawatt (MW)?

One terawatt (TW) is larger than one megawatt (MW). Specifically, 1 TW contains 1,000,000 MW, whereas 1 MW is 0.000001 TW.

How do I convert back from megawatts (MW) to terawatts (TW)?

To reverse the calculation from MW to TW, multiply your megawatt value by the inverse factor 0.000001 (or divide by 1,000,000). You can also click the Swap button in the tool above to flip directions in one click.

How many decimal places should I round TW to MW results to?

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 TW ≈ 5,000,000.00 MW). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Terawatts to Megawatts Converter

Enter the power in terawatts below to convert it to megawatts.

Megawatts to Terawatts (MW → TW)

Convert Terawatts to Megawatts

Enter a value in terawatts (TW) to convert to megawatts (MW).

Value (TW)

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Result

•

5,000,000megawatts

5 TW = 5,000,000 MW

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Suggested Conversions

Reference:NIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))

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Terawatt to Megawatt Conversion Table

Table showing various terawatt measurements converted to megawatts. Click any preset value or arrow to load it into the converter.

Terawatts (TW)	Megawatts (MW)
0.0000001 TW	0.1 MW
0.0000002 TW	0.2 MW
0.0000003 TW	0.3 MW
0.0000004 TW	0.4 MW
0.0000005 TW	0.5 MW
0.0000006 TW	0.6 MW
0.0000007 TW	0.7 MW
0.0000008 TW	0.8 MW
0.0000009 TW	0.9 MW
0.00000001 TW	0.01 MW

How to Convert Terawatts to Megawatts

To convert terawatts to megawatts, multiply the power by the following conversion ratio: 1,000,000 megawatts/terawatt.

Since one terawatt is equal to 1,000,000 megawatts, you can use this simple formula to convert:

megawatts = terawatts × 1,000,000

The power in megawatts is equal to the power in terawatts multiplied by 1,000,000.

For example, here's how to convert 5 terawatts to megawatts using the formula above.

megawatts = (5 TW × 1,000,000) = 5,000,000 MW

How Many Megawatts Are in a Terawatt?

There are 1,000,000 megawatts in a terawatt, which is why we use this value in the formula above.

1 TW = 1,000,000 MW|1 MW = 0.000001 TW

Our terawatt to megawatt calculator automatically converts your power measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Terawatts and megawatts are both units used to measure power. Keep reading to learn more about each unit.

What Is a Terawatt?

A terawatt is a unit of power equal to 1e+12 watts (W), the base unit for power. Equal to 10¹² Watts (1,000 GW). [1]

The terawatt is classified as an International System of Units (SI) unit of power. Terawatts can be abbreviated as TW; for example, 1 terawatt can be written as 1 TW.

In the metric system, "tera" is the standard SI prefix for trillions, or 10¹². This makes the terawatt (TW) a convenient decimal multiple of the watt (W).

In practice, terawatts (TW) are widely used across large-scale industrial, bulk, and macro-level power specifications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.

Learn more about terawatts in our Power Converter.

What Is a Megawatt?

A megawatt is a unit of power equal to 1,000,000 watts (W), the base unit for power. Equal to 1,000,000 Watts (1,000 kW). [2]

The megawatt is classified as a metric and SI-compatible unit of power. Megawatts can be abbreviated as MW; for example, 1 megawatt can be written as 1 MW.

In the metric system, "mega" is the standard SI prefix for millions, or 10⁶. This makes the megawatt (MW) a convenient decimal multiple of the watt (W).

In practice, megawatts (MW) are widely used across large-scale industrial, bulk, and macro-level power specifications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about megawatts in our Power Converter.

When converting power between terawatts (TW) and megawatts (MW), keep full floating-point precision (1 TW = 1,000,000 MW; 1 MW = 0.000001 TW) during intermediate calculations and round only the final megawatt figure to match your instrument tolerance.

More Terawatt & Megawatt Conversions

Need to calculate in the opposite direction? Use our megawatts to terawatts calculator to switch your starting unit immediately. You can also explore related tools such as converting megawatts to terawatts, converting watts to horsepower (hp), or converting horsepower (hp) to watts.

Convert from Terawatts

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Frequently Asked Questions

There are 1,000,000 megawatts (MW) in 1 terawatt (TW). Conversely, 1 megawatt (MW) is equal to 0.000001 terawatts (TW).

Power Converter

Quick Info

Direct Factor: 1 terawatt (TW) equals 1,000,000 megawatts (MW).
Inverse Factor: 1 megawatt (MW) equals 0.000001 terawatts (TW).
Formula: megawatts = terawatts × 1,000,000.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Terawatt (TW)

Equal to 10¹² Watts (1,000 GW).

Megawatt (MW)

Equal to 1,000,000 Watts (1,000 kW).

Watt (W)

Coherent SI unit of power equal to 1 Joule per second (1 J/s).

References

[1]NIST SP 811 · NIST SP 811 App. B.9 (Power & Radiant Flux)
Source
[2]NIST CUU · Derived SI Unit: Watt (W)
Source
[3]BIPM · SI Brochure (9th Ed.) — Power
Source

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References

NIST · BIPM · ISO

[1]
NIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))·Power Metrology Standard — Terawatts (TW) to Megawatts (MW)
NIST SP 811 Standard
[2]
NIST CUU (Derived SI Unit: Watt (W))·Unit Specifications: Terawatt (TW) & Megawatt (MW)
NIST CUU Specification
[3]
BIPM (SI Brochure (9th Ed.) — Power)·Conversion Factors & Mathematical Basis (TW to MW)
BIPM Reference

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