▸ processconvert
Heat Transfer

W/m²tokcal/(hr·m²)

Convert watts per square metre (W/m²) to kilocalories per hour-square metre (kcal/(hr·m²)).

Factor1 W/m² = 0.8598452 kcal/(hr·m²)

Converter

W/m²

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

Result
859.845kcal/(hr·m²)

Rendered to 6 significant figures.

Formula

Formula
kcal/(hr·m²) = W/m² × 0.8598452

Multiply any value in watts per square metre by 0.8598452 to obtain the value in kilocalories per hour-square metre.

Worked example

Convert 1000 W/m² to kcal/(hr·m²).

  1. 01Start with 1000 W/m².
  2. 02Multiply by the conversion factor: 1000 × 0.8598452 = 859.845 kcal/(hr·m²).
Result1000 W/m² = 859.845 kcal/(hr·m²)

Conversion table

W/m²kcal/(hr·m²)
10.85985
21.7197
54.2992
108.5985
2017.197
5042.992
10085.985
200171.97
500429.92
1000859.85

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from W/m² to kcal/(hr·m²)?
1 W/m² equals 0.8598452 kcal/(hr·m²). To convert, multiply the value in watts per square metre by 0.8598452.
How do I convert 1 W/m² to kcal/(hr·m²)?
1 W/m² = 0.859845 kcal/(hr·m²). For any value, multiply by 0.8598452.
How do I convert kcal/(hr·m²) back to W/m²?
Divide by the same factor — or equivalently, multiply by 1.163. So 1 kcal/(hr·m²) = 1.163 W/m².
When would I need to convert watt per square metre to kilocalorie per hour-square metre?
Heat-flux conversions between W/m² and kcal/(hr·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).

Related conversions