An easy conversion (not exact, but close enough), is to double the temp in C, and add 30. That will get you close to the temp in F.
If you want to be exact and don't have a conversion calculator handy, get your pencil and paper out and do it like this:
Tf = (9/5)*Tc+32; Tc = temperature in degrees Celsius, Tf = temperature in degrees Fahrenheit
Assume that you have a Celsius scale temperature of 100 degrees and you wish to convert it into degrees on the Fahrenheit scale. Using the stated formula, you first multiply the Celsius scale temperature reading by nine-fifths and get a result of 180. Then add 32 to 180 and get the final converted result of 212 degrees on the Fahrenheit scale.
Personally, the temp is what it is, and I don't really worry about the numbers.