Calculation

• 1). Multiply the Celsius temperature reading by nine. For example, if the Celsius reading is 20 degrees, you would multiply 20 by nine to get 180.
  
  
• 2). Divide your answer by five. Following the example, you would divide 180 by five to get a total of 36.
  
  
• 3). Add 32 to the result to get your final answer. Again using the example, you would add 36 and 32 for a total of 68. Therefore, 20 degrees Celsius is equal to 68 degrees Fahrenheit.
  
  
• 4). As an alternative, many websites, such as the National Oceanic and Atmospheric Administration site, have conversion applications that allow you to simply enter the information in a box and let the site tell you the equivalent temperature.