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Heat Transfer

W/m²toMW/m²

Convert watts per square metre (W/m²) to megawatts per square metre (MW/m²).

Factor1 W/m² = 1e-6 MW/m²

Converter

W/m²

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1MW/m²

Rendered to 6 significant figures.

Formula

Formula
MW/m² = W/m² × 1e-6

Multiply any value in watts per square metre by 1e-6 to obtain the value in megawatts per square metre.

Worked example

Convert 1.00000e+6 W/m² to MW/m².

  1. 01Start with 1.00000e+6 W/m².
  2. 02Multiply by the conversion factor: 1.00000e+6 × 1e-6 = 1 MW/m².
Result1.00000e+6 W/m² = 1 MW/m²

Conversion table

W/m²MW/m²
11e-6
22e-6
55e-6
101e-5
202e-5
505e-5
1000.0001
2000.0002
5000.0005
10000.001

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from W/m² to MW/m²?
1 W/m² equals 1e-6 MW/m². To convert, multiply the value in watts per square metre by 1e-6.
How do I convert 1 W/m² to MW/m²?
1 W/m² = 1e-6 MW/m². For any value, multiply by 1e-6.
How do I convert MW/m² back to W/m²?
Divide by the same factor — or equivalently, multiply by 1000000. So 1 MW/m² = 1.00000e+6 W/m².
When would I need to convert watt per square metre to megawatt per square metre?
Heat-flux conversions between W/m² and MW/m² appear in radiative-heat-transfer analysis, furnace and reactor design, electronics cooling, and solar-energy calculations. W/m² is the SI standard; BTU/(hr·ft²) and kcal/(hr·m²) appear in US and legacy European datasheets.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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