20 degrees Celsius is equal to 68 degrees Fahrenheit. The conversion formula from Celsius to Fahrenheit is given by F=(95×C)+32F=\left(\frac{9}{5}\times C\right)+32F=(59×C)+32 where F is the temperature in Fahrenheit and C is the temperature in Celsius. Substituting 20 for C, the conversion is calculated as follows: F=(95×20)+32=68F=\left(\frac{9}{5}\times 20\right)+32=68F=(59×20)+32=68 Therefore, 20 degrees Celsius is equal to 68 degrees Fahrenheit