Conversions
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly. Reference table for common temperatures.
Convert
Celsius
100 °C
Fahrenheit
212 °F
Kelvin
373.15 K
Temperature Conversion Table
| Celsius | Fahrenheit | Kelvin |
|---|---|---|
| -40 °C | -40 °F | 233.15 K |
| -20 °C | -4 °F | 253.15 K |
| -10 °C | 14 °F | 263.15 K |
| 0 °C | 32 °F | 273.15 K |
| 10 °C | 50 °F | 283.15 K |
| 20 °C | 68 °F | 293.15 K |
| 25 °C | 77 °F | 298.15 K |
| 30 °C | 86 °F | 303.15 K |
| 37 °C | 98.6 °F | 310.15 K |
| 40 °C | 104 °F | 313.15 K |
| 50 °C | 122 °F | 323.15 K |
| 100 °C | 212 °F | 373.15 K |
Frequently Asked Questions about the Temperature Converter
How do I convert Celsius to Fahrenheit?
Multiply by 9/5, then add 32. For example, 20 C = (20 x 9/5) + 32 = 68 F. This is the exact formula the calculator uses, with results rounded to four decimal places.
How do I convert Fahrenheit to Celsius?
Subtract 32, then multiply by 5/9. For example, 100 F = (100 - 32) x 5/9 = 37.7778 C. The calculator shows four decimal places so you can see the full precision.
What is Kelvin?
Kelvin is an absolute temperature scale used in science and engineering. It has the same degree size as Celsius but starts at absolute zero (0 K = -273.15 C = -459.67 F), the coldest temperature physically possible. To convert from Celsius, add 273.15; to convert back, subtract 273.15.
What is room temperature?
Room temperature is typically 20-22 C (68-72 F), a comfortable range for most indoor environments in the US. In scientific contexts, 25 C (77 F) is a common standard reference point.
What temperature is freezing?
Water freezes at 0 C / 32 F / 273.15 K at standard atmospheric pressure (sea level). The calculator rejects any input below absolute zero (-273.15 C, -459.67 F, or 0 K), since those values are physically impossible.
What temperature is boiling?
Water boils at 100 C / 212 F / 373.15 K at standard atmospheric pressure. At higher altitudes, where air pressure is lower, water boils below 100 C - for example, around 95 C (203 F) at 5,280 feet elevation in Denver.