Fahrenheit to Celsius Converter
Convert Fahrenheit to Celsius and Kelvin instantly. Accurate temperature conversion calculator. Use this free online converter for instant, accurate results.
Cách chuyển đổi độ F sang độ C
To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and multiply by 5/9: °C = (°F − 32) × 5/9.
For example, 72°F: (72 − 32) × 5/9 = 22.22°C. Room temperature in the US (72°F) equals about 22°C.
The Fahrenheit scale is primarily used in the United States, while Celsius is used in virtually every other country.
Điểm tham chiếu nhiệt độ chính
- 32°F = 0°C (Water freezes)
- 72°F = 22.2°C (Room temperature)
- 98.6°F = 37°C (Body temperature)
- 212°F = 100°C (Water boils)
- -40°F = -40°C (Scales meet)
Memorizing these key points helps you quickly estimate temperatures without a calculator.
Thủ thuật chuyển đổi tinh thần nhanh chóng
For a rough estimate: subtract 30 from the Fahrenheit temperature and divide by 2. For example, 80°F: (80 − 30) ÷ 2 = 25°C (actual: 26.7°C).
This shortcut is accurate enough for everyday use like checking weather forecasts or setting an oven.
Frequently Asked Questions
100°F bằng độ C là bao nhiêu?
100°F equals 37.78°C. This is slightly above normal body temperature (37°C / 98.6°F).
Ở nhiệt độ nào thì độ F và độ C giống nhau?
Fahrenheit and Celsius are equal at -40 degrees. This is the only point where both scales intersect.
Tại sao Hoa Kỳ sử dụng Fahrenheit?
The US adopted the Fahrenheit scale in the colonial era and never switched to Celsius. Most other countries transitioned to Celsius as part of metric system adoption.