68 degrees Fahrenheit is equivalent to approximately 20 degrees Celsius. To convert Fahrenheit to Celsius, the formula is C = (F - 32) / 1.8, where C is the temperature in Celsius and F is the temperature in Fahrenheit. Therefore, to convert 68 degrees Fahrenheit to Celsius, we plug in 68 for F in the formula and solve for C:

C = (68 - 32) / 1.8 C = 36 / 1.8 C = 20

Therefore, 68 degrees Fahrenheit is equivalent to approximately 20 degrees Celsius.