How do you convert metric horsepower to gigawatts?

To convert metric horsepower (PS) to gigawatts (GW), multiply the power in metric horsepower by 7.354988e-7 (gigawatts = metric horsepower × 7.354988e-7).

What is 5 metric horsepower in gigawatts?

5 metric horsepower (5 PS) is equal to 0.00000367 gigawatts (0.00000367 GW).

Which is larger, 1 horsepower (metric ps) (PS) or 1 gigawatt (GW)?

One gigawatt (GW) is larger than one horsepower (metric ps) (PS). Specifically, 1 GW equals 1,359,621.6173039 PS, while 1 PS is 7.354988e-7 GW.

How do I convert back from gigawatts (GW) to metric horsepower (PS)?

To reverse the calculation from GW to PS, multiply your gigawatt value by the inverse factor 1,359,621.6173039 (or divide by 7.354988e-7). You can also click the Swap button in the tool above to flip directions in one click.

How many decimal places should I round PS to GW results to?

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 PS ≈ 0.00 GW). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Metric Horsepower to Gigawatts Converter

Enter the power in metric horsepower below to convert it to gigawatts.

Gigawatts to Metric Horsepower (GW → PS)

Convert Metric Horsepower to Gigawatts

Enter a value in metric horsepower (PS) to convert to gigawatts (GW).

Value (PS)

From

Result

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0.000003677gigawatts

5 PS = 0.000003677 GW

Result updates automatically

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Suggested Conversions

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

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Horsepower to Gigawatt Conversion Table

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

Metric Horsepower (PS)	Gigawatts (GW)
1 PS	0.000000735 GW
10 PS	0.000007355 GW
100 PS	0.00007355 GW
1,000 PS	0.000735499 GW
10,000 PS	0.007355 GW
100,000 PS	0.0735499 GW
1,000,000 PS	0.7354987 GW
5,000,000 PS	3.6774938 GW
10,000,000 PS	7.3549875 GW
25,400,000 PS	18.6816683 GW

How to Convert Metric Horsepower to Gigawatts

To convert metric horsepower to gigawatts, multiply the power by the following conversion ratio: 0.000000735 gigawatts/horsepower.

Since one horsepower is equal to 0.000000735 gigawatts, you can use this simple formula to convert:

gigawatts = metric horsepower × 0.000000735

The power in gigawatts is equal to the power in metric horsepower multiplied by 0.000000735.

For example, here's how to convert 5 metric horsepower to gigawatts using the formula above.

gigawatts = (5 PS × 0.000000735) = 0.000003677 GW

How Many Gigawatts Are in a Horsepower?

There are 0.000000735 gigawatts in a horsepower, which is why we use this value in the formula above.

1 PS = 0.000000735 GW|1 GW = 1,359,621.6173039 PS

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

Metric Horsepower and gigawatts are both units used to measure power. Keep reading to learn more about each unit.

What Is a Horsepower?

A horsepower is a unit of power equal to 735.49875 watts (W), the base unit for power. Metric horsepower (75 kgf·m/s = 735.49875 W). [1]

The horsepower is classified as a metric and SI-compatible unit of power. Metric Horsepower can be abbreviated as PS; for example, 1 horsepower can be written as 1 PS.

When working with metric horsepower (PS) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, metric horsepower (PS) are widely used across standard power applications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about metric horsepower in our Power Converter.

What Is a Gigawatt?

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

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

In the metric system, "giga" is the standard SI prefix for billions, or 10⁹. This makes the gigawatt (GW) a convenient decimal multiple of the watt (W).

In practice, gigawatts (GW) 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 gigawatts in our Power Converter.

When converting power between metric horsepower (PS) and gigawatts (GW), keep full floating-point precision (1 PS = 0.000000735 GW; 1 GW = 1,359,621.6173039 PS) during intermediate calculations and round only the final gigawatt figure to match your instrument tolerance.

More Horsepower & Gigawatt Conversions

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

Convert from Metric Horsepower

Convert to Gigawatts

Frequently Asked Questions

There are 7.354988e-7 gigawatts (GW) in 1 horsepower (PS). Conversely, 1 gigawatt (GW) is equal to 1,359,621.6173039 metric horsepower (PS).

Power Converter

Quick Info

Direct Factor: 1 horsepower (metric ps) (PS) equals 7.354988e-7 gigawatts (GW).
Inverse Factor: 1 gigawatt (GW) equals 1,359,621.6173039 metric horsepower (PS).
Formula: gigawatts = metric horsepower × 7.354988e-7.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Horsepower (Metric PS) (PS)

Metric horsepower (75 kgf·m/s = 735.49875 W).

Gigawatt (GW)

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

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 — Metric Horsepower (PS) to Gigawatts (GW)
NIST SP 811 Standard
[2]
NIST CUU (Derived SI Unit: Watt (W))·Unit Specifications: Horsepower (Metric PS) (PS) & Gigawatt (GW)
NIST CUU Specification
[3]
BIPM (SI Brochure (9th Ed.) — Power)·Conversion Factors & Mathematical Basis (PS to GW)
BIPM Reference

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