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

°C = (°F - 32) × 5/9

Given that the temperature is 70°F, we can substitute the value in the formula to find the Celsius equivalent:

°C = (70°F - 32) × 5/9

°C = (38) × 5/9

°C = 21.111...

So, 70 degrees Fahrenheit is approximately 21.11 degrees Celsius.