Easy Way to Convert Celsius to Fahrenheit

Exact Conversion Method

• 1

  Multiply the temperature in Celsius by 9. For example, if the temperature is 10, multiply 10 by 9. The result will be 90.

• 2

  Divide the result in Step 1 by 5. For example, if the result was 90, divide 90 by 5. The result will be 18.

• 3

  Add 32 to the result in Step 2. If the result was 18, add 18 to 32. The result will be 50. This is the temperature in Fahrenheit.

Quick Estimate Method

• 4

  Enter the temperature in Celsius into a calculator. Alternatively, hold the number in your head.

• 5

  Multiply the temperature in Celsius by 2. For example, if the temperature in Celsius is 10, the result will be 20.

• 6

  Add 30 to the result in Step 2. For example, if the result was 20, add 20 to 30. The result will be 50. This result is an estimate of the temperature in Fahrenheit; in this particular example, it also happens to be the same as the exact conversion.