What Formula Would Be Used to Convert 115 Degrees Fahrenheit to Celsius?


Quick Answer

The formula to use to convert 115 degrees Fahrenheit to Celsius is Tc = (5 / 9) x (Tf - 32). Tc represents the desired temperature conversion in Celsius and Tf represents the known temperature in degrees Fahrenheit. Thus, if the known Fahrenheit temperature is 115 F, the Celsius conversion is determined by (5 / 9) x (115 - 32) = 46 C.

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Full Answer

To determine the degrees in Fahrenheit if the Celsius temperature is known, the formula to use is Tf = Tc x 9/5 + 32. Thus, if the Celsius temperature is 46 degrees and 9/5 is converted to its decimal equivalent or 1.8, the conversion to Fahrenheit is derived by 46 x 1.8 + 32 = 115 degrees Fahrenheit.

When the Celsius temperature is known, a rough conversion for the sake of weather comparisons can be accomplished by simply doubling the Celsius temperature and adding 30. Using a Celsius temperature of 30 C as an example, the Fahrenheit rough equivalent is derived by 30 x 2 + 30 = 90 F.

The Celsius temperature scale was originally formulated by the Swedish astronomer Anders Celsius in 1742. It was initially based on 0 degrees representing the freezing point of water and 100 degrees as the temperature at which water boils. A change in temperature of 1 degree Celsius is equal to a temperature change of 1.8 degrees Fahrenheit.

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