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                | °F 
                  to °C Conversion Table: |   
                | -30 
                    °F = -34.444 °C-20 °F = -28.889 °C
 -10 °F = -23.333 °C
 0 °F = -17.778 °C
 10 °F = -12.222 °C
 20 °F = -6.667 °C
 30 °F = -1.111 °C
 | 40 
                  °F = 4.444 °C 50 °F = 10 °C
 60 °F =15.556 °C
 70 °F = 21.111 °C
 80 °F = 26.667 °C
 90 °F = 32.222 °C
 100 °F = 37.778 °C
 |  
               
                | °C 
                  to °F Conversion Table: |   
                | -30 
                  °C= -22 °F -20 °C = -4 °F
 -10 °C = 14 °F
 0 °C = 32 °F
 10 °C = 50 °F
 20 °C = 68 °F
 30 °C = 86 °F
 | 40 °C = 104 °F 50 °C = 122 °F
 60 °C = 140 °F
 70 °C = 158 °F
 80 °C = 176 °F
 90 °C = 194 °F
 100 °C = 212 °F
 |    The temperature scale 
              is named after the German physicist Daniel Gabriel Fahrenheit (1686 
              - 1736), who proposed it in 1724. In Fahrenheit scale, the freezing point of water is 32 degrees F 
              (written: "32 °F"), and the boiling point is 212 degrees, placing 
              the boiling and freezing points of water exactly 180° apart. On 
              the Celsius scale, the freezing and boiling points of water are 
              precisly 100 degrees apart, thus the unit of Fahrenheit scale, is 
              5/9 of a degree Celsius. Negative 40 degrees Fahrenheit (-40 °F) 
              is equal to negative 40 degrees Celsius (-40 °C).
 Sample conversion: we need to convert 0°F to °C - To convert temperatures in degrees Fahrenheit to Celsius, subtract 32 and multiply by 0.5555555555555556 (or 5/9). After the calculator is used we will get the result : -17.778°C.
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