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Power and Energy

BTU/stokcal/hr

Convert British thermal units per second (BTU/s) to kilocalories per hour (kcal/hr).

Factor1 BTU/s = 907.1847 kcal/hr

Converter

BTU/s

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

Result
907.185kcal/hr

Rendered to 6 significant figures.

Formula

Formula
kcal/hr = BTU/s × 907.1847

Multiply any value in British thermal units per second by 907.1847 to obtain the value in kilocalories per hour.

Worked example

Convert 1 BTU/s to kcal/hr.

  1. 01Start with 1 BTU/s.
  2. 02Multiply by the conversion factor: 1 × 907.1847 = 907.185 kcal/hr.
Result1 BTU/s = 907.185 kcal/hr

Conversion table

BTU/skcal/hr
1907.18
21814.4
54535.9
109071.8
2018144
5045359
10090718
2001.8144e+5
5004.5359e+5
10009.0718e+5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from BTU/s to kcal/hr?
1 BTU/s equals 907.1847 kcal/hr. To convert, multiply the value in British thermal units per second by 907.1847.
How do I convert 1 BTU/s to kcal/hr?
1 BTU/s = 907.185 kcal/hr. For any value, multiply by 907.1847.
How do I convert kcal/hr back to BTU/s?
Divide by the same factor — or equivalently, multiply by 0.001102311. So 1 kcal/hr = 0.00110231 BTU/s.
When would I need to convert British thermal unit per second to kilocalorie per hour?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
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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