Fahrenheit to Celsius Converter

Subtract 32, then multiply by 5/9. For example, 72°F: (72-32) × 5/9 = 40 × 0.5556 = 22.2°C. Quick estimate: subtract 30, divide by 2 — gives 21°C (close enough for weather).

98.6°F = 37°C. This is normal body temperature. Common references: 32°F = 0°C (freezing), 72°F = 22.2°C (room temp), 100°F = 37.8°C, 212°F = 100°C (boiling).

-40 degrees. Both scales read -40 at the same actual temperature. This is where the two scales intersect mathematically.