Here's how to convert 80 degrees Fahrenheit to Celsius:

Formula:

Celsius = (Fahrenheit - 32) * 5/9

Calculation:

1. Subtract 32 from Fahrenheit: 80 - 32 = 48

2. Multiply by 5/9: 48 * (5/9) = 26.67 (approximately)

Therefore, 80 degrees Fahrenheit is approximately 26.67 degrees Celsius.