100 kelvin is equal to -173.15 degrees Celsius.
The conversion from kelvin to Celsius involves subtracting 273.15 from the kelvin temperature. Since kelvin starts at absolute zero, which is -273.15°C, subtracting this value gives the equivalent temperature in Celsius.
Conversion Tool
Result in celcius:
Conversion Formula
To convert kelvin (K) to Celsius (°C), you use the formula:
°C = K – 273.15
This works because the kelvin scale starts at absolute zero, which is -273.15 degrees Celsius. So, subtracting 273.15 from the kelvin value shifts the scale down to Celsius. For example, if you have 100 K:
- Start with 100 K.
- Subtract 273.15 from 100.
- 100 – 273.15 = -173.15°C.
This shows that 100 kelvin is very cold, below freezing by a large margin.
Conversion Example
- Example 1: 200 K to Celsius
- Start with 200 kelvin.
- Subtract 273.15 from 200.
- 200 – 273.15 = -73.15°C.
- The temperature in Celsius is -73.15 degrees.
- Example 2: 0 K to Celsius
- Start with 0 kelvin.
- Subtract 273.15 from 0.
- 0 – 273.15 = -273.15°C.
- This is absolute zero in Celsius.
- Example 3: 300 K to Celsius
- Start with 300 kelvin.
- Subtract 273.15 from 300.
- 300 – 273.15 = 26.85°C.
- This temperature is close to room temperature.
Conversion Chart
| Kelvin (K) | Celsius (°C) |
|---|---|
| 75.0 | -198.15 |
| 80.0 | -193.15 |
| 85.0 | -188.15 |
| 90.0 | -183.15 |
| 95.0 | -178.15 |
| 100.0 | -173.15 |
| 105.0 | -168.15 |
| 110.0 | -163.15 |
| 115.0 | -158.15 |
| 120.0 | -153.15 |
| 125.0 | -148.15 |
This chart helps to quickly find the Celsius equivalent of kelvin values between 75 and 125 kelvin. Read the kelvin value in the left column and find the converted Celsius temperature in the right column, making it easier to compare temperatures.
Related Conversion Questions
- How cold is 100 kelvin in Celsius compared to freezing point?
- What temperature in Celsius corresponds to 100 K?
- Is 100 kelvin above or below zero Celsius?
- How to convert 100 kelvin into degrees Celsius manually?
- What does 100 K equal in Celsius for scientific experiments?
- Can I convert 100 kelvin to Celsius using a simple formula?
- How different is 100 kelvin from 0°C in temperature scale?
Conversion Definitions
Kelvin: Kelvin is the base unit of temperature in the International System of Units, starting at absolute zero, where all molecular motion stops. It uses no degree symbol and measures temperature on an absolute scale, important in physics and chemistry for thermodynamic calculations.
Celcius: Celsius is a temperature scale where zero is the freezing point of water and 100 is the boiling point at sea level. It is widely used for everyday temperature measurements and scientific contexts, marked by degrees Celsius (°C), and is based on the metric system.
Conversion FAQs
Can kelvin values be negative and how does it affect conversion?
Kelvin scale cannot have negative values because it starts at absolute zero, the lowest possible temperature. Since negative kelvin is physically meaningless, any input below 0 K is invalid. When converting to Celsius, values below zero kelvin do not exist.
Why subtract 273.15 when converting kelvin to Celsius?
The kelvin scale is absolute, starting at absolute zero (0 K), which equals -273.15°C. Subtracting 273.15 shifts the zero point from absolute zero in kelvin to the freezing point of water in Celsius, effectively aligning the two scales for temperature comparisons.
Is the conversion formula the same for converting Celsius to kelvin?
No, the formula is reversed for Celsius to kelvin: you add 273.15 to the Celsius temperature. For example, to convert 25°C to kelvin, it’s 25 + 273.15 = 298.15 K. This moves the Celsius scale upward to the absolute scale starting point.
Are kelvin and Celsius used interchangeably in science?
While related, kelvin and Celsius measure temperature on different scales. Kelvin is used in scientific fields where absolute temperature matters, like thermodynamics, while Celsius is common for general temperature reporting. They cannot be used interchangeably without conversion.
What happens if I convert 0 kelvin to Celsius?
Zero kelvin equals -273.15°C, which is absolute zero—the theoretical lowest temperature possible. At this temperature, molecular motion stops completely. It serves as the reference point for both temperature scales.