Electrical Power Systems Technology

(Elle) #1

Appendix C


Metric Conversions


This appendix lists some typical means of converting quantities
in the English system into values in the metric system (and vice versa).
Tables C-1 through C-6 list the typical multiplying factor for various
units. However, temperature conversions require specific formulas. These
formulas follow:



  1. To convert degrees Fahrenheit to degrees Celsius, use one of the
    following formulas:


5
°C = — (°F – 32°)
9
or
°F – 32°
°C = ———
1.8



  1. To change degrees Celsius to degrees Fahrenheit, use one of the
    following formulas:


9
°F = — (°C) + 32°)
5
or
°F = 1.8 (°C) + 32°



  1. Degrees Celsius may be converted to Kelvins by using:


°C = K – 273.16°



  1. Kelvins can be converted to degrees Celsius by simply changing the
    formula in Step 3 to:


K = °C + 273.16°


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