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Heat Transfer

kBTU/(hr·ft²)tokcal/(hr·m²)

Convert kilo-British thermal units per hour-square foot (kBTU/(hr·ft²)) to kilocalories per hour-square metre (kcal/(hr·m²)).

Factor1 kBTU/(hr·ft²) = 2712.46 kcal/(hr·m²)

Converter

kBTU/(hr·ft²)

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

Result
2712.46kcal/(hr·m²)

Rendered to 6 significant figures.

Formula

Formula
kcal/(hr·m²) = kBTU/(hr·ft²) × 2712.46

Multiply any value in kilo-British thermal units per hour-square foot by 2712.46 to obtain the value in kilocalories per hour-square metre.

Worked example

Convert 1 kBTU/(hr·ft²) to kcal/(hr·m²).

  1. 01Start with 1 kBTU/(hr·ft²).
  2. 02Multiply by the conversion factor: 1 × 2712.46 = 2712.46 kcal/(hr·m²).
Result1 kBTU/(hr·ft²) = 2712.46 kcal/(hr·m²)

Conversion table

kBTU/(hr·ft²)kcal/(hr·m²)
12712.5
25424.9
513562
1027125
2054249
501.3562e+5
1002.7125e+5
2005.4249e+5
5001.3562e+6
10002.7125e+6

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kBTU/(hr·ft²) to kcal/(hr·m²)?
1 kBTU/(hr·ft²) equals 2712.46 kcal/(hr·m²). To convert, multiply the value in kilo-British thermal units per hour-square foot by 2712.46.
How do I convert 1 kBTU/(hr·ft²) to kcal/(hr·m²)?
1 kBTU/(hr·ft²) = 2712.46 kcal/(hr·m²). For any value, multiply by 2712.46.
How do I convert kcal/(hr·m²) back to kBTU/(hr·ft²)?
Divide by the same factor — or equivalently, multiply by 0.0003686691. So 1 kcal/(hr·m²) = 0.000368669 kBTU/(hr·ft²).
When would I need to convert kilo-British thermal unit per hour-square foot to kilocalorie per hour-square metre?
Heat-flux conversions between kBTU/(hr·ft²) 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).

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