Convert watt/square metre to kilowatt/square metre

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Watt/Square Metre

The watt per square metre (W/m²) is the SI unit of heat flux density and irradiance. It represents the power transmitted per unit area. The solar constant (total solar irradiance) at Earth's orbit is approximately 1361 W/m². Used in heat transfer engineering, solar energy, and thermal radiation analysis. 


Kilowatt/Square Metre

The kilowatt per square metre (kW/m²) equals 1000 W/m² and is used in concentrated solar power systems, industrial furnaces, and high-intensity thermal processes. It is a convenient unit for large heat flux values encountered in industrial heating and renewable energy applications. 


Watt/Square Metre to Kilowatt/Square Metre conversion table
Watt/Square MetreKilowatt/Square MetreKilowatt/Square MetreWatt/Square Metre
10.00111000
20.00222000
30.00333000
50.00555000
100.011010000
200.022020000
250.0252525000
500.055050000
1000.1100100000
2500.25250250000
5000.5500500000
1000110001E+06
How to convert Watt/Square Metre to Kilowatt/Square Metre

1 W/m² = 0.001 kW/m². To convert any value, multiply it by 0.001. For example, 25 W/m² = 0.025 kW/m².

Frequently asked questions
How many kW/m² are there in one W/m²?
One W/m² is equal to 0.001 kW/m².
How do you convert Watt/Square Metre to Kilowatt/Square Metre?
Multiply the value in Watt/Square Metre by 0.001 to get the result in Kilowatt/Square Metre.
How much is 25 W/m² in kW/m²?
25 W/m² is equal to 0.025 kW/m².
How do you convert Kilowatt/Square Metre back to Watt/Square Metre?
Divide by the same factor: multiply the value in Kilowatt/Square Metre by 1000 to get Watt/Square Metre.

Most common heat flux density unit conversions