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Conversion Factors for Units of Heat Density


Metric Units British Units

  Watt per square centimetre
(W/cm2)
Calorie per square centimetre second
(cal/cm2 s)
Thousand kilocalories per square metre hour
(103 kcal/m2 hr)
Thousand British thermal units per square feet hour
(103 BTh U/ft2 hr)

1 Watt per square centimetre
(W/cm2)
1 0.238 846 8.598 5 3.169 98
 
1 Calorie per square centimetre second
(cal/cm2 s)
4.186 8 1 36 13.272 1
 
1 Thousand kilocalories per square metre hour
(103 kcal/m2 hr)
0.116 3 0.027 777 8 1 0.368 669
 
1 Thousand British thermal units per square feet hour
(103 BTh U/ft2 hr)
0.315 459 0.075 346 2.712 46 1