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Convert between Celsius, Fahrenheit, and Kelvin instantly
Celsius
0.00°C
Fahrenheit
32.00°F
Kelvin
273.15 K
| Reference | °C | °F | K |
|---|---|---|---|
| Absolute Zero | -273.15 | -459.67 | 0 |
| Water Freezes | 0 | 32 | 273.15 |
| Room Temp | 20 | 68 | 293.15 |
| Body Temp | 37 | 98.6 | 310.15 |
| Water Boils | 100 | 212 | 373.15 |
At -273.15°C (-459.67°F), atoms stop moving entirely. It's the coldest possible temperature and has never been fully achieved in a lab.
Normal human body temperature is 37°C (98.6°F), but it fluctuates throughout the day and varies by up to 1°C between individuals.
Fahrenheit (1724) used ice-salt mixture as 0°. Celsius (1742) originally had boiling at 0° and freezing at 100° - later reversed!
Lava temperatures range from 700-1200°C. The hottest recorded air temperature on Earth was 56.7°C (134°F) in Death Valley, 1913.
Water boils at 100°C at sea level, but only 71°C on Mount Everest due to lower pressure. Bread bakes at 180-220°C.
The Sun's surface is about 5,500°C (9,932°F), but its core reaches 15 million°C - hot enough to fuse hydrogen into helium!
Space averages -270.45°C, just 2.7° above absolute zero. The Boomerang Nebula is the coldest known place at -272°C.
Antarctica holds the cold record at -89.2°C (-128.6°F). Scientists have cooled atoms to billionths of a degree above absolute zero.