The websites AskNumbers.com and Metric-Conversions.org both provide online charts for converting between the Celsius and Fahrenheit temperature scales. Using such charts allows a person to avoid the complication of manual conversions with formulas.
Knowing such conversion formulas is useful, however. The formula for converting from Celsius to Fahrenheit is F = C * 9/5 + 32, where F equals Fahrenheit, and C equals Celsius, explains AskNumbers.com.
The Celsius scale places the boiling point of water at 100 degrees and the freezing point at zero degrees. This is a simplification over the more complicated Fahrenheit measurements. A temperature of zero degrees Celsius equals 32 degrees Fahrenheit.