42°F to °C
Instant 42°F to °C conversion — free, accurate, no signup.
Instant Answer
42 °F = 5.56 °C
Calculated instantly · No rounding errors
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42 °F = 5.56 °C
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About 42°F to °C
US weather forecasts use Fahrenheit. Temperatures like 72°F (a pleasant 22°C) or 95°F (a sweltering 35°C) need to be converted to make sense for international visitors. The formula for converting Fahrenheit to Celsius is: °C = (°F − 32) × 5/9. Subtracting 32 accounts for the difference in zero points, and multiplying by 5/9 adjusts the scale size. Body temperature readings on American thermometers use Fahrenheit. Normal body temperature of 98.6°F equals 37°C. A fever above 100.4°F means above 38°C — useful to know for medical care abroad.
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Frequently Asked Questions
42°F equals 5.56°C. The formula is: °C = (°F − 32) × 5/9.
Subtract 32 from 42, then multiply by 5/9. So (42 − 32) × 0.5556 = 5.56°C.
42°F (5.56°C) is cold weather.
Normal body temperature is 98.6°F (37°C). 42°F equals 5.56°C.
Fahrenheit is used primarily in the United States. Celsius is the standard in most other countries and in all scientific work. Converting is important for travel, cooking, medicine, and weather forecasting.
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