Celsius to Fahrenheit formula

 

Celsius to Fahrenheit formula

Below is a Celsius (°C) to Fahrenheit (°F) formula you may use. There is also calculator for quick conversion and at the bottom is a Celsius to Fahrenheit chart and table.

T(°F) = T(°C) × 9/5 + 32

or

T(°F) = T(°C) × 1.8 + 32

Example

Convert 20 degrees Celsius to degrees Fahrenheit:

T(°F) = 30(°C) × 9/5 + 32 = 86(°F)

C to F Conversion Hack (in your head)

  • Double the Celsius temp number
  • subtract the first digit of the result from the result
  • add 32.

you’ll never be more than 1 degree F off.

 

Celsius to Fahrenheit Chart

Celsius to Fahrenheit Formula Chart

Celsius to Fahrenheit Table

Celsius (°C)         Fahrenheit (°F)

-50 °C    -58.0 °F

-40 °C    -40.0 °F

-30 °C    -22.0 °F

-20 °C    -4.0 °F

-10 °C    14.0 °F

-9 °C       15.8 °F

-8 °C       17.6 °F

-7 °C       19.4 °F

-6 °C       21.2 °F

-5 °C       23.0 °F

-4 °C       24.8 °F

-3 °C       26.6 °F

-2 °C       28.4 °F

-1 °C       30.2 °F

0 °C        32.0 °F

1 °C        33.8 °F

2 °C        35.6 °F

3 °C        37.4 °F

4 °C        39.2 °F

5 °C        41.0 °F

6 °C        42.8 °F

7 °C        44.6 °F

8 °C        46.4 °F

9 °C        48.2 °F

10 °C      50.0 °F

20 °C      68.0 °F

30 °C      86.0 °F

40 °C      104.0 °F

50 °C      122.0 °F

60 °C      140.0 °F

 

History of  Temperature

The Celsius temperature is still sometimes referred to as “centigrade”. Centigrade means “consisting of or divided into 100 degrees.  Invented by Swedish Astronomer Andres Celsius (1701-1744),  Celsius has 100 degrees between the freezing point (0 C) and boiling point (100 C) of pure water at 14.7 psi (air pressure at sea level). In 1948, an international conference on weights and measures adopted the term Celsius. So we now use Celsius for our Celsius to Fahrenheit formula.

Fahrenheit is a temperature scale invented in 1724 by the German physicist Daniel Gabriel Fahrenheit (1686–1736). On Fahrenheit’s original scale the lower point (0 degrees) was the lowest temperature he could cool brine. The highest was average body temperature of a human (96 degrees).

Kelvin scale starts at absolute zero, when all thermal motion ceases. It is then calculated as the fraction 1⁄273.16 of the thermodynamic temperature of the triple point of water.

Rankine temperature was based upon the Fahrenheit temperature scale. Zero Rankine represented absolute zero Fahrenheit instead.


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