Temperature Measurement Tool

Fahrenheit to Celsius Converter

Convert Fahrenheit (°F) to Celsius (°C) with step-by-step math. Ideal for weather reports, oven cooking temperatures, and international travel.

Formula & Mathematical Derivation

Official equation for converting Fahrenheit to Celsius.

Conversion Equation

°C = (°F - 32) × 5/9

Contextual Background & Unit Standards

The Fahrenheit and Celsius temperature scales use different freezing points and degree increments. On the Fahrenheit scale, water freezes at 32°F and boils at 212°F under standard atmospheric pressure, creating a 180-degree span. On the Celsius scale, pure water freezes at 0°C and boils at 100°C, spanning 100 degrees. Because of this baseline offset, converting Fahrenheit to Celsius requires two steps: first subtract the 32-degree offset, then multiply the remainder by 5/9 (or divide by 1.8). For example, a summer weather reading of 86°F converts as: (86 - 32) = 54; 54 × 5/9 = 30°C. Notably, -40° is the exact mathematical intersection where both temperature scales converge (-40°F = -40°C).

Quick Reference Conversion Table

Pre-computed lookup values for instant reference. 100% static & search-engine indexable.

SSG Pre-rendered

Fahrenheit	Celsius	Instant Copy
-40 Fahrenheit	-40 Celsius
0 Fahrenheit	-17.7778 Celsius
32 Fahrenheit	0 Celsius
68 Fahrenheit	20 Celsius
77 Fahrenheit	25 Celsius
98.6 Fahrenheit	37 Celsius
212 Fahrenheit	100 Celsius
350 Fahrenheit	176.6667 Celsius
400 Fahrenheit	204.4444 Celsius