Convert Celsius to Fahrenheit need help

Tell us what’s happening:

Your code so far

function convertToF(celsius) {
  var fahrenheit;
// Only change code below this line
  
  
  
// Only change code above this line
  

  
  return fahrenheit;
}
// Change the inputs below to test your code



convertToF(30);

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Safari/604.1.38.

Link to the challenge:
https://www.freecodecamp.org/challenges/convert-celsius-to-fahrenheit