Fahrenheit to Celsius Converter
Convert Fahrenheit to Celsius instantly. Type a °F value and get the exact °C result. Formula: °C = (°F − 32) × 5/9.
Fahrenheit-to-Celsius conversion is needed daily by anyone in a metric country consuming American media, weather reports, recipes, or medical information — and by Americans working in international contexts. The formula: °C = (°F − 32) × 5/9, or equivalently °C = (°F − 32) / 1.8. For weather, international viewers of American news need to convert: a "high of 85°F" in New York becomes 29.4°C. Summer temperatures in Arizona or Texas often hit 110–115°F (43.3–46.1°C) — numbers that appear extreme in both scales. Winters in the US Midwest see −20°F (−28.9°C), context for the severity. In cooking, American recipes that specify oven temperatures in Fahrenheit need to be converted for metric-using cooks. Common references: 350°F = 177°C (moderate oven), 400°F = 204°C (hot oven), 325°F = 163°C (slow oven), 450°F = 232°C (very hot). Meat internal temperatures: well-done beef at 160°F is 71°C; medium-rare steak at 135°F is 57°C. For baby care, American pediatricians report infant temperatures in Fahrenheit: a rectal temperature of 100.4°F (38°C) is the threshold for fever in infants. Parents from metric countries need to translate these guidelines. The key mental shortcut: subtract 32, then halve the result (rather than multiplying by 5/9) for a quick approximation.
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Choose a unit category from the tab bar at the top: Length, Weight, Temperature, Volume, Area, Speed, or Other.
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Frequently Asked Questions
What is the formula to convert Fahrenheit to Celsius?
°C = (°F − 32) × 5/9, which is the same as (°F − 32) / 1.8. For example, 98.6°F = (98.6 − 32) × 5/9 = 66.6 × 5/9 = 37°C.
What is 98.6°F in Celsius?
98.6°F = 37°C. This is the canonical normal human body temperature. Note that actual normal body temperature varies by individual and measurement method — 36.1–37.2°C is the typical range.
What is 350°F in Celsius?
350°F = 176.7°C (approximately 177°C). This is a standard moderate oven temperature frequently called for in baking recipes, especially in American cookbooks.
Is there a quick way to convert Fahrenheit to Celsius mentally?
Subtract 32, then divide by 2 (instead of the exact divisor 1.8). This gives a quick approximation: 86°F → 86−32=54 → 54÷2=27°C (actual: 30°C). Better approximation: subtract 32, multiply by 0.56.