To convert Celsius to Fahrenheit, what is the correct formula?

The correct formula to convert Celsius to Fahrenheit is to multiply by 1.8 (or 9/5) and then add 32. This method is based on the relationship between the two temperature scales, where zero degrees Celsius is equivalent to 32 degrees Fahrenheit, and the size of the degree on the Fahrenheit scale is smaller than that on the Celsius scale. Therefore, the multiplication factor accounts for this difference in scale.

For instance, if you take the temperature in Celsius, say 25°C, you would first multiply 25 by 1.8, which equals 45. Then, adding 32 to that result gives you 77°F. This conversion demonstrates the linear relationship between the two temperature scales, ensuring accurate conversion for any given Celsius temperature.

Other formulas do not represent the correct relationship or sequence for converting Celsius to Fahrenheit, leading to error in results.