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Power and Heat Flow Rate Conversion Calculator

Convert Power and Heat Flow

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Calculator Use

Convert among units of power and heat flow.

  • (IT) = International Table
  • (th) = Thermochemical

How to Convert Units of Power and Heat Flow

Conversions are performed by using a conversion factor. By knowing the conversion factor, converting between units can become a simple multiplication problem:

S * C = E

Where S is our starting value, C is our conversion factor, and E is our end converted result.

To simply convert from any unit into W, for example, from 50 BTU/h, just multiply by the value in the right column in the table below.

50 BTU/h * 0.2930711 [ (W) / (BTU/h) ] = 14.653555 W

To convert from W into units in the left column divide by the value in the right column or, multiply by the reciprocal, 1/x.

14.653555 W / 0.2930711 [ (W) / (BTU/h) ] = 50 BTU/h

To convert among any units in the left column, say from A to B, you can multiply by the factor for A to convert A into W then divide by the factor for B to convert out of W.  Or, you can find the single factor you need by dividing the A factor by the B factor.

For example, to convert from BTU/h (th) to cal/s (th) you would multiply by 0.2928751 then divide by 4.184.  Or, multiply by 0.2928751/4.184 = 0.069998829. So, to convert directly from BTU/h (th) to cal/s (th) you multiply by 0.069998829.



Table of Power and Heat Flow Conversions

Note that you must first complete the operations in the Multiply By column in order to have the correct factor.  For example, converting calorie per hour (IT) to watts, 4.1868/60/60 is 4.1868 divided by 60, divided by 60 which is equal to 0.001163.  They were left in this form so that you could calculate a more accurate conversion factor.

Units, symbols and conversion values
used in this power and heat flow calculator
To Convert from
Unit
Unit
Symbol
and Convert to
(W)
Multiply by
( W / Unit )
BTU [IT] per hour
BTUIT/h
watt
0.2930711
BTU [IT] per minute
BTUIT/min
watt
0.2930711*60
BTU [IT] per second
BTUIT/s
watt
0.2930711*60*60
calorie [IT] per hour
calIT/h
watt
4.1868/60/60
calorie [IT] per minute
calIT/min
watt
4.1868/60
calorie [IT] per second
calIT/sec
watt
4.1868
BTU [th] per hour
BTUth/h
watt
0.2928751
BTU [th] per minute
BTUth/min
watt
0.2928751*60
BTU [th] per second
BTUth/s
watt
0.2928751*60*60
calorie [th] per hour
calth/h
watt
4.184/60/60
calorie [th] per minute
calth/min
watt
4.184/60
calorie [th] per second
calth/s
watt
4.184
cheval-vapeur
cv
watt
735.49875
erg per hour
erg/h
watt
0.0000001/60/60
erg per minute
erg/min
watt
0.0000001/60
erg per second
erg/s
watt
0.0000001
foot-pound-force per hour
ft·lbf/h
watt
1.355818/60/60
foot-pound-force per minute
ft·lbf/min
watt
1.355818/60
foot-pound-force per second
ft·lbf/s
watt
1.355818
foot-poundal per hour
ft·pdl/h
watt
0.04214011/60/60
foot-poundal per minute
ft·pdl/min
watt
0.04214011/60
foot-poundal per second
ft·pdl/s
watt
0.04214011
horsepower (550 ft · lbf/s)
hp
watt
745.6999
horsepower (boiler)
hp
watt
9809.5
horsepower (electric)
hp
watt
746
horsepower (metric)
hp
watt
735.49875
horsepower (U.K.)
hp
watt
745.7
horsepower (water)
hp
watt
746.043
joule per hour
J/h
watt
1/60/60
joule per minute
J/min
watt
1/60
joule per second
J/s
watt
1
kilowatt
kW
watt
1000
pferdestarke
PS
watt
735.49875
watt
W
watt
1

References

The National Institute of Standards and Technology (NIST) - The NIST Guide for the use of the International System of Units - Appendix B, subsections B.8 Factors for Units Listed Alphabetically and B.9 Factors for units listed by kind of quantity or field of science.

Lide, David R., Daniel (Editor-in-Chief). CRC Handbook of Chemistry and Physics, 89th Edition New York, NY: CRC Press, p. 1-28, 2008.

Wikipedia contributors. "Conversion of units" Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, last visited 16 Nov. 2010.



 

Cite this content, page or calculator as:

Furey, Edward "Power and Heat Flow Rate Conversion Calculator"; from http://www.calculatorsoup.com - Online Calculator Resource.

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