63 degrees Fahrenheit is equal to approximately 17.22 degrees Celsius. To convert Fahrenheit to Celsius, we can use the formula (F - 32) x 5/9 = C, where F is the temperature in Fahrenheit and C is the temperature in Celsius. Plugging in 63 for F, we get (63 - 32) x 5/9 = 17.22 for C. Therefore, 63 degrees Fahrenheit is equal to 17.22 degrees Celsius.