25 Celsius is equal to 298.15 Kelvin.
To convert 25 Celsius to Kelvin, you add 273.15 to the Celsius temperature. This is because the Kelvin scale starts at absolute zero, which is -273.15 degrees Celsius, so adding 273.15 shifts the scale accordingly.
Conversion Tool
Result in kelvin:
Conversion Formula
The formula to convert Celsius to Kelvin is simple: K = °C + 273.15. You add 273.15 to the Celsius temperature to get the corresponding Kelvin value. Kelvin scale starts at absolute zero, the coldest temperature possible, which corresponds to -273.15 °C.
Because Kelvin is an absolute temperature scale, it has no negative values. When you add 273.15, you shift the Celsius values so that zero Kelvin equals absolute zero.
Example calculation for 25 °C:
- Start with Celsius temperature: 25 °C
- Add 273.15: 25 + 273.15 = 298.15
- Result: 298.15 K
Conversion Example
- 10 °C to Kelvin:
- Take 10 °C
- Add 273.15: 10 + 273.15 = 283.15 K
- Result is 283.15 Kelvin
- -5 °C to Kelvin:
- Start with -5 °C
- Add 273.15: -5 + 273.15 = 268.15 K
- Kelvin value is 268.15
- 40 °C to Kelvin:
- 40 plus 273.15 = 313.15 K
- So, 40 °C equals 313.15 Kelvin
- 0 °C to Kelvin:
- 0 + 273.15 = 273.15 K
- This is the freezing point of water in Kelvin
- 50 °C to Kelvin:
- 50 + 273.15 = 323.15 K
- 50 Celsius corresponds to 323.15 Kelvin
Conversion Chart
The table below shows Celsius values from 0.0 to 50.0 and their equivalent in Kelvin. You can read across each row to find the Kelvin temperature for a given Celsius degree by adding 273.15.
| Celsius (°C) | Kelvin (K) |
|---|---|
| 0.0 | 273.15 |
| 5.0 | 278.15 |
| 10.0 | 283.15 |
| 15.0 | 288.15 |
| 20.0 | 293.15 |
| 25.0 | 298.15 |
| 30.0 | 303.15 |
| 35.0 | 308.15 |
| 40.0 | 313.15 |
| 45.0 | 318.15 |
| 50.0 | 323.15 |
Related Conversion Questions
- What is the Kelvin temperature when 25 degrees Celsius is converted?
- How do you convert 25 °C to Kelvin without a calculator?
- Is 25 Celsius higher or lower than 298 Kelvin?
- Why does adding 273.15 convert Celsius to Kelvin at 25 degrees?
- What is the formula to change 25 °C into Kelvin?
- How close is 25 Celsius to room temperature in Kelvin?
- Can I convert 25 °C to Kelvin by multiplying instead of adding?
Conversion Definitions
Celsius: Celsius is a temperature scale, where zero degrees is the freezing point of water and 100 degrees is boiling point at sea level. Temperatures measured in Celsius are commonly used in everyday weather, cooking, and scientific experiments across many countries.
Kelvin: Kelvin is an absolute temperature scale used in science, starting at absolute zero (-273.15 °C), which is theoretically the coldest temperature possible. Unlike Celsius, Kelvin has no negative numbers and is used in physics and chemistry for precise temperature measurements.
Conversion FAQs
Why is 273.15 added to Celsius to get Kelvin?
Kelvin scale is based on absolute zero, the lowest possible temperature, which corresponds to -273.15 degrees Celsius. Adding 273.15 shifts the Celsius scale so zero Kelvin equals absolute zero, thus giving a direct measure of thermal energy without negative values.
Can Kelvin temperatures be negative like Celsius?
No, Kelvin temperatures cannot be negative. Since Kelvin starts at absolute zero, it represents the point where all particle motion stops. Temperatures below absolute zero are impossible under classical thermodynamics, so Kelvin values are always zero or positive.
Is 25 Celsius a typical temperature in Kelvin for daily life?
Yes, 25 °C equals 298.15 K, which is close to room temperature. Scientists and engineers use Kelvin for experiments, but everyday temperatures like 25 Celsius are common and familiar in Kelvin scale for precision.
Are Celsius and Kelvin interchangeable?
They measure the same temperature difference but on different scales. You can convert one to the other by adding or subtracting 273.15, but the numbers themselves aren’t interchangeable without conversion, because Kelvin starts at absolute zero.
Why don’t we just use Kelvin for weather forecasts?
Kelvin isn’t used in weather forecasts because it’s less intuitive for daily life. Celsius relates directly to water’s freezing and boiling points, making it easier for people to understand temperatures they experience. Kelvin is reserved for scientific use.