How Do You Convert Celsius to Fahrenheit?
Explore Celsius
Convert Celsius, Fahrenheit, and Kelvin instantly and accurately. Temperature conversion is essential for cooking, weather forecasting, scientific research, and travel between countries using different systems.
Popular conversions
How it works
Celsius and Fahrenheit use different zero points and scale steps. The formula is: °F = (°C × 9/5) + 32. Kelvin starts at absolute zero and is used in science: K = °C + 273.15. Water freezes at 0°C / 32°F and boils at 100°C / 212°F.
Quick reference
Frequently Asked Questions
How do you convert Celsius to Fahrenheit?
Use the formula: °F = (°C × 9/5) + 32. For example, 20°C × 9/5 + 32 = 68°F.
How do you convert Fahrenheit to Celsius?
Use the formula: °C = (°F − 32) × 5/9. For example, (98.6°F − 32) × 5/9 = 37°C.
What is absolute zero?
Absolute zero is 0 Kelvin, which equals −273.15°C or −459.67°F. It is the lowest theoretically possible temperature.
What is normal body temperature in Fahrenheit?
Normal human body temperature is 98.6°F (37°C). Temperatures above 100.4°F (38°C) are generally considered a fever.
What is the boiling point of water in Fahrenheit?
Water boils at 212°F (100°C) at sea level. At higher altitudes, the boiling point is lower due to reduced air pressure.
What temperature should an oven be for baking?
Common baking temperatures: cookies and cakes 170–180°C (340–355°F), bread 190–220°C (375–430°F), pizza 220–250°C (430–480°F), roasting meat 160–200°C (320–390°F). Fan-assisted ovens typically run 10–20°C hotter than conventional settings.
What is a normal human body temperature?
Normal body temperature is 36.1–37.2°C (97–99°F). A fever is generally defined as above 38°C (100.4°F). A high fever is above 39.5°C (103°F). Temperature varies slightly by time of day and measurement method (oral, axillary, rectal).
At what temperature does it feel hot outside?
Weather temperature reference points: below 10°C (50°F) feels cold, 15–20°C (59–68°F) is cool and comfortable, 25–30°C (77–86°F) is warm, above 35°C (95°F) is hot, and above 40°C (104°F) is very hot and potentially dangerous without shade and hydration.
What temperature is a refrigerator and freezer?
A refrigerator should be kept at 1–4°C (34–39°F) to slow bacterial growth without freezing food. A freezer should be at −18°C (0°F) or colder. Food stays safe indefinitely in a properly maintained freezer, though quality degrades over time.
What is the coldest and hottest temperature ever recorded on Earth?
The coldest temperature recorded was −89.2°C (−128.6°F) at Vostok Station, Antarctica, in 1983. The hottest was 56.7°C (134.1°F) at Furnace Creek, Death Valley, California, in 1913. The average global surface temperature is about 15°C (59°F).