The first step to converting degrees Fahrenheit into degrees Celsius is to subtract 32 from the degrees Fahrenheit value, expressed as 55 minus 32 is equal to 23.
Next, the resulting number from the first step is multiplied by the fraction 5/9. Either use the fraction or the decimal value 0.5555 when performing this calculation. The expression is: 23 multiplied by 0.5555 is 12.78.
The result of the conversion formula is 12.78, so 55 degrees Fahrenheit is equal to 12.78 degrees Celsius.