Convert Horsepower to Megawatts

To convert horsepower (hp) to megawatts (MW), multiply the horsepower value by the standard conversion factor.

• Formula: MW = hp × 0.0007456999214
• Key fact: 1 hp = 0.0007456999214 MW

Example:

• 250 hp × 0.0007456999214 = 0.1864249804 MW
  So, 250 horsepower = 0.186425 megawatts (rounded).

Tip: If you want a quick estimate, use 1 hp ≈ 0.000746 MW.

What is horsepower (hp) and what is a megawatt (MW)?

Horsepower (hp) is a unit of power often used for engines and motors. A megawatt (MW) is a metric unit of power used for large systems like generators, plants, and grids. Power measures how fast work gets done or how fast energy gets used.

How do you convert horsepower to megawatts?

Convert horsepower to watts, then divide by 1,000,000 to get megawatts. The exact factor depends on the type of horsepower (mechanical, metric, or electrical).

What’s the formula to convert mechanical horsepower to megawatts?

Mechanical horsepower (US) converts like this:

MW = hp × 0.000745699872

This is based on 1 mechanical hp = 745.699872 watts.

What’s the formula to convert metric horsepower to megawatts?

Metric horsepower (often written as PS or cv) converts like this:

MW = metric hp × 0.00073549875

This is based on 1 metric hp = 735.49875 watts.

What’s the formula to convert electrical horsepower to megawatts?

Electrical horsepower is often used in electrical settings and converts like this:

MW = electrical hp × 0.000746

This is based on 1 electrical hp = 746 watts.

Why are there different horsepower values?

“Horsepower” isn’t one single standard worldwide. Different fields and countries used slightly different definitions over time. That’s why conversions change a bit depending on whether you use mechanical hp, metric hp, or electrical hp.

Which horsepower type should I use for motors and engines?

Most car and engine ratings in the US use mechanical horsepower. Many European specs use metric horsepower (PS or cv). Some electric motor nameplates may refer to electrical horsepower. If you’re unsure, check the spec sheet or nameplate.

How many megawatts is 1 horsepower?

It depends on the definition:

• 1 mechanical hp = 0.000745699872 MW
• 1 metric hp = 0.00073549875 MW
• 1 electrical hp = 0.000746 MW

How many horsepower is 1 megawatt?

These are common reverse conversions:

• 1 MW = 1341.02209 mechanical hp
• 1 MW = 1359.62162 metric hp
• 1 MW = 1340.48257 electrical hp

Values may round a bit in tables and tools.

Can I round hp to MW for quick estimates?

Yes, for rough sizing you can use:

• 1,000 hp ≈ 0.746 MW (mechanical hp)

This works well for quick checks, but use exact factors for reports, billing, or compliance.

What are common horsepower to megawatt conversions?

Using mechanical horsepower (US), these are handy reference points:

• 100 hp ≈ 0.07457 MW
• 500 hp ≈ 0.37285 MW
• 1,000 hp ≈ 0.74570 MW
• 2,000 hp ≈ 1.49140 MW
• 10,000 hp ≈ 7.456999 MW

Does converting hp to MW depend on efficiency?

The unit conversion does not depend on efficiency. It’s a math conversion between power units. Efficiency matters when you compare input power (like electrical MW in) to output shaft power (like hp out). In that case, you also need the system’s efficiency or losses.

Is horsepower the same as kilowatts and megawatts?

They measure the same thing (power), but use different unit systems. Megawatts and kilowatts are metric units. Horsepower is a non-metric unit. You can convert between them once you know the horsepower type.

Why do power ratings on equipment sometimes not match after conversion?

Ratings may use different horsepower types, rounding, test methods, or conditions. Some ratings show shaft output, while others show electrical input. Temperature, voltage, altitude, and duty cycle can also change real-world output.