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Heat Transfer

kBTU/(hr·ft²)tocal/(cm²·s)

Convert kilo-British thermal units per hour-square foot (kBTU/(hr·ft²)) to calories per square centimetre-second (cal/(cm²·s)).

Factor1 kBTU/(hr·ft²) = 0.07539653 cal/(cm²·s)

Converter

kBTU/(hr·ft²)

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

Result
75.3965cal/(cm²·s)

Rendered to 6 significant figures.

Formula

Formula
cal/(cm²·s) = kBTU/(hr·ft²) × 0.07539653

Multiply any value in kilo-British thermal units per hour-square foot by 0.07539653 to obtain the value in calories per square centimetre-second.

Worked example

Convert 1000 kBTU/(hr·ft²) to cal/(cm²·s).

  1. 01Start with 1000 kBTU/(hr·ft²).
  2. 02Multiply by the conversion factor: 1000 × 0.07539653 = 75.3965 cal/(cm²·s).
Result1000 kBTU/(hr·ft²) = 75.3965 cal/(cm²·s)

Conversion table

kBTU/(hr·ft²)cal/(cm²·s)
10.075397
20.15079
50.37698
100.75397
201.5079
503.7698
1007.5397
20015.079
50037.698
100075.397

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kBTU/(hr·ft²) to cal/(cm²·s)?
1 kBTU/(hr·ft²) equals 0.07539653 cal/(cm²·s). To convert, multiply the value in kilo-British thermal units per hour-square foot by 0.07539653.
How do I convert 1 kBTU/(hr·ft²) to cal/(cm²·s)?
1 kBTU/(hr·ft²) = 0.0753965 cal/(cm²·s). For any value, multiply by 0.07539653.
How do I convert cal/(cm²·s) back to kBTU/(hr·ft²)?
Divide by the same factor — or equivalently, multiply by 13.26321. So 1 cal/(cm²·s) = 13.2632 kBTU/(hr·ft²).
When would I need to convert kilo-British thermal unit per hour-square foot to calorie per square centimetre-second?
Heat-flux conversions between kBTU/(hr·ft²) 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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