Kilowatt to Megawatt Converter

Convert power units: Kilowatts (kW) ↔ Megawatts (MW) — accurate for energy systems, power plants, and electrical engineering.

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Power Conversion Formula (SI Standard):

1 Megawatt = 1000 Kilowatts | 1 Kilowatt = 0.001 Megawatts

MW = kW × 0.001 | kW = MW × 1000 (Results: 3 decimal places)

*SI unit definition: 1 Watt (W) = 1 J/s; 1 kW = 10³ W; 1 MW = 10⁶ W → 1 MW = 1000 kW

kW

Medium power unit: Industrial machinery, commercial buildings, small power plants

MW

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Quick conversions (common power ratings) - click to auto-fill:

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About Kilowatts and Megawatts

Understanding power units for energy systems, engineering, and electricity generation.

Power Unit Comparison (SI Standard)

Unit Symbol Conversion Factor Common Uses
Kilowatt kW 1 kW = 0.001 MW = 1000 W = 1.34102 HP Industrial machinery, commercial buildings, residential backup generators, small wind turbines, solar farms (medium-scale)
Megawatt MW 1 MW = 1000 kW = 1,000,000 W = 1341.02 HP Power plants (coal, gas, hydro, nuclear), large wind/solar farms, regional power grids, industrial complexes

Common Power Conversion Examples (3 decimal places)

Kilowatts (kW) Megawatts (MW) Application
50 0.050 Small commercial building HVAC system
250 0.250 Medium manufacturing plant
1,000 1.000 Small hydroelectric power plant
50,000 50.000 Medium-sized wind farm (20 turbines)
1,000,000 1000.000 Large nuclear power plant

Key Note: Power Unit Scale for Energy Projects

Understanding the power scale helps in selecting the right unit for different applications:

Power Range Preferred Unit Typical Projects Industry Sector
1-999 kW Kilowatt (kW) Residential/commercial backup, small factories Building services, small manufacturing
1-999 MW Megawatt (MW) Medium power plants, large wind/solar farms Energy generation, industrial complexes
1000+ MW Gigawatt (GW) Large nuclear/coal plants, national grids Utility-scale energy, power transmission

Frequently Asked Questions

About kilowatts, megawatts, and power conversions

Why is 1 megawatt equal to 1000 kilowatts?

The conversion factor comes from the International System of Units (SI) prefix definitions:

  • SI prefixes define decimal multiples of base units (in this case, the watt).
  • "Kilo-" (k) is a prefix meaning 10³ (1000), so 1 kilowatt = 1000 watts.
  • "Mega-" (M) is a prefix meaning 10⁶ (1,000,000), so 1 megawatt = 1,000,000 watts.
  • Calculation: 1 MW = 10⁶ W = 1000 × 10³ W = 1000 kW (exact SI definition).

Precise factor: 1 MW = 1000.0 kW (exact, no rounding needed for engineering applications)

Practical use: 1-3 decimal places are sufficient for most energy and engineering needs

When should I use kilowatts vs. megawatts for power measurements?

The choice depends on power scale and application type:

  • Kilowatts (kW): Ideal for medium-scale power systems. Used for residential/commercial backup generators, small industrial machinery, commercial building HVAC systems, and small renewable energy installations (solar panels, small wind turbines). Practical for power ratings below 1000 kW.
  • Megawatts (MW): Preferred for large-scale power systems. Used for power plants (coal, gas, hydro, nuclear), large wind/solar farms, industrial complexes, and regional power grid planning. Makes large power ratings more manageable (e.g., 500 MW is easier to interpret than 500,000 kW).
How do I convert these units to other power units (horsepower, gigawatts)?

Use these cross-unit conversion factors for full power measurement flexibility:

1 Kilowatt (kW) = 1.34102 Horsepower (HP) = 0.001 Megawatts (MW) = 0.000001 Gigawatts (GW)

1 Megawatt (MW) = 1341.02 Horsepower (HP) = 1000 Kilowatts (kW) = 0.001 Gigawatts (GW)

1 Gigawatt (GW) = 1,341,020 Horsepower (HP) = 1,000,000 Kilowatts (kW) = 1000 Megawatts (MW)

Practical cross-conversion examples:

  • 500 kW = 500 × 1.34102 = 670.51 HP = 500 × 0.001 = 0.5 MW
  • 25 MW = 25 × 1341.02 = 33,525.5 HP = 25 × 1000 = 25,000 kW
  • 1.5 GW = 1.5 × 1000 = 1500 MW = 1.5 × 1,000,000 = 1,500,000 kW

These conversions are essential for engineers, energy planners, and anyone working across international power standards or different industry sectors.

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