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To convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9. So 98.6°F = 37°C (body temperature), 350°F = 176.67°C (common baking temperature), and 32°F = 0°C (freezing point). A quick estimate: subtract 30, then halve — e.g. 80°F → 50 ÷ 2 = 25°C (actual: 26.7°C).
American weather apps, forecasts, and thermometers display Fahrenheit. A "hot day" at 95°F is 35°C. A freezing winter at 14°F is −10°C. Understanding the Celsius equivalent helps international travelers interpret US weather immediately without mental conversion struggles.
Did you know? Daniel Gabriel Fahrenheit set 96°F as human body temperature based on his wife's temperature reading. The current standard of 98.6°F arose later from precise recalibrations. Fahrenheit's 0°F was based on a brine solution (water, ice, and ammonium chloride mixture).
Using a US oven for a European recipe that specifies Celsius temperatures. Understanding American weather reports while traveling. Reading US medical charts that list normal body temperature as 98.6°F. Interpreting US food safety guidelines that specify storage temperatures in Fahrenheit.