What is 66 degrees fahrenheit in celsius?

66 degrees Fahrenheit is equal to approximately 18.9 degrees Celsius. To convert Fahrenheit to Celsius, you can use the formula: C = (F - 32) / 1.8

So for 66 degrees Fahrenheit: C = (66 - 32) / 1.8 C = 34 / 1.8 C ≈ 18.9

Therefore, 66 degrees Fahrenheit is equal to approximately 18.9 degrees Celsius.