Kelvin to Celsius Calculator

Quick and accurate temperature conversion between Kelvin and Celsius

Kelvin (K)

Celsius (°C)

Temperature Conversion Formula

To convert Celsius to Fahrenheit:

Celsius = Kelvin - 273.15

Common Temperature References

Description	Kelvin (K)	Celsius (°C)
Water Freezing	273.15K	0°C
Room Temperature	293.15K	20°C
Body Temperature	310.15K	37°C
Water Boiling	373.15K	100°C
Absolute Zero	0K	-273.15°C
Sun Surface	5778K	5505°C
Lightning	30273.15K	30000°C
Volcano	973.15K	700°C

Other Temperature Converters

Understanding Temperature Scales: Celsius, Fahrenheit, and Kelvin

Temperature scales allow us to measure and compare heat levels in our environment. While most countries use Celsius (°C), the United States primarily uses Fahrenheit (°F). Kelvin (K) is the standard unit used in scientific research. Understanding these scales and how to convert between them is essential for:

International travel
Scientific research
Cooking and baking
Weather interpretation
Medical purposes
Industrial applications

Simple Temperature Conversion Formula

Converting between Celsius, Fahrenheit, and Kelvin is straightforward:

Celsius to Fahrenheit: °F = (°C × 9/5) + 32

Fahrenheit to Celsius: °C = (°F - 32) × 5/9

Celsius to Kelvin: K = °C + 273.15

Kelvin to Celsius: °C = K - 273.15

Fahrenheit to Kelvin: K = (°F + 459.67) × 5/9

Kelvin to Fahrenheit: °F = (K × 9/5) - 459.67

Quick Mental Conversion Tips

Need to convert temperatures quickly without a calculator? Here are some helpful shortcuts:

Double and 30 Rule: Double the Celsius temperature and add 30 (instead of 32). This gives a close approximation.
Key Temperature Anchors: 0°C is 32°F (freezing point), 20°C is 68°F (room temperature), 37°C is 98.6°F (human body temperature), 100°C is 212°F (water boiling point).
Kelvin Conversion: To quickly estimate Kelvin from Celsius, add 273.15. For Fahrenheit to Kelvin, use the formula K = (°F + 459.67) × 5/9. For quick approximations, you can just add 273 to the Celsius value.