• Nov 25, 2025 79f To C rmula. The Conversion Formula: From Fahrenheit to Celsius The fundamental formula for converting Fahrenheit to Celsius is: °C = (°F - 32) × 5/9 Let's break this down: 1. Subtract 32: First, subtract 32 from the Fahrenheit temperature. This accounts for the difference in the freezing points of w By Dan Wiegand