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    UnitConvertLab — Unit conversion laboratory

    25 Horsepower (Mech) to Gigawatt

    25 Horsepower (Mech) (hp) equals

    1.864250e-5 GW

    25 × 7.456999e-7 = 1.864250e-5 Gigawatt

    Convert Horsepower (Mech) (hp) to Gigawatt (GW) instantly. 1 hp = 7.456999e-7 GW.

    Worked example: converting Horsepower (Mech) to Gigawatt

    1. Step 1 — start with the formula. GW = hp × 7.456999e-7
    2. Step 2 — substitute your figure. 25 hp × 7.456999e-7
    3. Step 3 — read the result. 25 hp = 1.864250e-5 GW
    4. Step 4 — check it in reverse. hp = GW × 1,341,022.0895950282 returns 25 hp, which matches the figure you started with.

    Power Converter

    22 units available

    Decimals:
    1.864250e-5

    25 hp = 1.864250e-5 GW

    Formula:

    GW = hp × 7.456999e-7

    With your value: 25 hp = 1.864250e-5 GW

    How big is that?

    Everyday references on a logarithmic scale, all expressed in horsepower (mech) so you can sanity-check the result.

    LED bulb (1/2.1e+3 your value)0.0121 hp
    Laptop (1/2.9e+2 your value)0.0872 hp
    Microwave oven (1/19 your value)1.34 hp
    Electric kettle (1/6.2 your value)4.02 hp
    Your value25.0 hp
    Family car engine (4.8× your value)121 hp

    Other Horsepower (Mech) to Gigawatt conversions

    18 hp to GW20 hp to GW21 hp to GW24 hp to GW26 hp to GW28 hp to GW30 hp to GWFull Horsepower (Mech) to Gigawatt converter

    Horsepower (Mech) to Gigawatt Conversion Table

    Horsepower (Mech) (hp)Gigawatt (GW)
    0.53.728499e-7
    17.456999e-7
    21.491400e-6
    53.728499e-6
    107.456999e-6
    151.118550e-5
    201.491400e-5
    251.864250e-5
    503.728499e-5
    1007.456999e-5
    2500.000186
    5000.000373
    10000.000746

    Gigawatt to Horsepower (Mech) Conversion Table

    Gigawatt (GW)Horsepower (Mech) (hp)
    0.5670,511.044798
    11,341,022.089595
    22,682,044.17919
    56,705,110.447975
    1013,410,220.89595
    1520,115,331.343925
    2026,820,441.791901
    2533,525,552.239876
    5067,051,104.479751
    100134,102,208.959503
    250335,255,522.398757
    500670,511,044.797514
    10001,341,022,089.595029

    Where these values come from

    Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

    Horsepower (Mech) (hp)

    Power

    Exact conversion

    Mechanical horsepower is exactly 550 ft·lbf/s = 745.699 871 582 270 22 W.

    Metric horsepower (PS) is 735.498 75 W — about 1.4 % lower.

    Source: NIST Special Publication 811, Guide for the Use of the International System of Units

    National Institute of Standards and Technology (US) · Reviewed 2026-07-01

    Gigawatt (GW)

    Power

    Exact conversion

    Derived from the watt (1 W = 1 J/s).

    Source: NIST Special Publication 811, Guide for the Use of the International System of Units

    National Institute of Standards and Technology (US) · Reviewed 2026-07-01

    How to Convert Horsepower (Mech) to Gigawatt

    To convert from Horsepower (Mech) (hp) to Gigawatt (GW), multiply the value by 7.456999e-7.

    Formula: GW = hp × 7.456999e-7

    Reverse: hp = GW × 1,341,022.0895950282

    Step-by-Step Example

    1. Start with your value in Horsepower (Mech). For example: 5 hp
    2. Multiply by the conversion factor: 5 x 7.456999e-7
    3. The result is: 3.728499e-6 GW

    About Horsepower (Mech)

    The horsepower (mech) (hp) is a unit of power. One horsepower (mech) equals 745.6998716 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

    Common uses: power calculations, engineering and science, education.

    About Gigawatt

    The gigawatt (GW) is a unit of power. One gigawatt equals 1.000000 × 10^+9 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

    Common uses: power calculations, engineering and science, education.

    Frequently Asked Questions

    What is 25 Horsepower (Mech) in Gigawatt?

    25 Horsepower (Mech) equals 1.864250e-5 Gigawatt.

    How many Gigawatt are in 1 Horsepower (Mech)?

    There are exactly 7.456999e-7 Gigawatt in 1 Horsepower (Mech). This means the conversion factor from Horsepower (Mech) to Gigawatt is 7.456999e-7.

    What is the formula to convert Horsepower (Mech) to Gigawatt?

    The formula to convert Horsepower (Mech) to Gigawatt is: GW = hp × 7.456999e-7. For example, to convert 10 Horsepower (Mech) to Gigawatt, you would multiply 10 by 7.456999e-7.

    What is a Horsepower (Mech)?

    The horsepower (mech) (hp) is a unit of power. One horsepower (mech) equals 745.6998716 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

    What is a Gigawatt?

    The gigawatt (GW) is a unit of power. One gigawatt equals 1.000000 × 10^+9 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

    What are the common uses of Horsepower (Mech)?

    The Horsepower (Mech) is commonly used in power calculations, engineering and science, education.

    Related Power Conversions

    Watt → GigawattKilowatt → GigawattMegawatt → GigawattMilliwatt → GigawattMicrowatt → GigawattHorsepower (Mech) → WattHorsepower (Mech) → KilowattHorsepower (Mech) → MegawattHorsepower (Mech) → Milliwatt

    Cite this page

    UnitConvertLab. (2026). 25 Horsepower (Mech) to Gigawatt. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/25-horsepower_mech-to-gigawatt