The formula to convert degrees Fahrenheit (°F) to degrees Celsius (°C) is:

°C = (°F - 32) / 1.8

Plugging in 54°F, we get:

°C = (54°F - 32) / 1.8

°C = (22°F) / 1.8

°C = 12.22°C

Therefore, 54 degrees Fahrenheit is equal to approximately 12.22 degrees Celsius.