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Heat Transfer

W/cm²tocal/(cm²·s)

Convert watts per square centimetre (W/cm²) to calories per square centimetre-second (cal/(cm²·s)).

Factor1 W/cm² = 0.2390057 cal/(cm²·s)

Converter

W/cm²

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

Result
2.39006cal/(cm²·s)

Rendered to 6 significant figures.

Formula

Formula
cal/(cm²·s) = W/cm² × 0.2390057

Multiply any value in watts per square centimetre by 0.2390057 to obtain the value in calories per square centimetre-second.

Worked example

Convert 10 W/cm² to cal/(cm²·s).

  1. 01Start with 10 W/cm².
  2. 02Multiply by the conversion factor: 10 × 0.2390057 = 2.39006 cal/(cm²·s).
Result10 W/cm² = 2.39006 cal/(cm²·s)

Conversion table

W/cm²cal/(cm²·s)
10.23901
20.47801
51.195
102.3901
204.7801
5011.95
10023.901
20047.801
500119.5
1000239.01

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from W/cm² to cal/(cm²·s)?
1 W/cm² equals 0.2390057 cal/(cm²·s). To convert, multiply the value in watts per square centimetre by 0.2390057.
How do I convert 1 W/cm² to cal/(cm²·s)?
1 W/cm² = 0.239006 cal/(cm²·s). For any value, multiply by 0.2390057.
How do I convert cal/(cm²·s) back to W/cm²?
Divide by the same factor — or equivalently, multiply by 4.184. So 1 cal/(cm²·s) = 4.184 W/cm².
When would I need to convert watt per square centimetre to calorie per square centimetre-second?
Heat-flux conversions between W/cm² and cal/(cm²·s) 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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