The conversion of 25 degrees Celsius (c) to Kelvin (k) results in 298.15 K.
This value is calculated by adding 273.15 to the Celsius temperature, because the Kelvin scale starts at absolute zero, which is -273.15 degrees Celsius. Thus, to convert Celsius to Kelvin, you shift the scale by this constant value.
Conversion Tool
Result in k:
Conversion Formula
The formula to convert Celsius to Kelvin is very straightforward:
K = °C + 273.15
This formula works because the Kelvin scale’s zero point is absolute zero, which is exactly -273.15 degrees Celsius. By adding 273.15, you adjust the Celsius temperature to the Kelvin scale.
For example, converting 25 °C:
- Start with Celsius value: 25 °C
- Add 273.15: 25 + 273.15 = 298.15
- The result is 298.15 K
Conversion Example
- 10 °C to K:
- Take 10 °C
- Add 273.15: 10 + 273.15 = 283.15
- Result is 283.15 K
- -5 °C to K:
- Take -5 °C
- Add 273.15: -5 + 273.15 = 268.15
- Result is 268.15 K
- 0 °C to K:
- Take 0 °C
- Add 273.15: 0 + 273.15 = 273.15
- Result is 273.15 K
- 37 °C to K:
- Take 37 °C
- Add 273.15: 37 + 273.15 = 310.15
- Result is 310.15 K
- -20 °C to K:
- Take -20 °C
- Add 273.15: -20 + 273.15 = 253.15
- Result is 253.15 K
Conversion Chart
The table below lists Celsius values from 0.0 to 50.0, and their equivalent in Kelvin. To use the chart, find the Celsius value on the left and read across to find its Kelvin equivalent. This allow quick reference without calculation.
| 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 25 degrees Celsius in Kelvin?
- How do you convert 25°C to K without a calculator?
- Why do we add 273.15 when converting Celsius to Kelvin?
- Is 25 Celsius warmer than 300 Kelvin?
- What is the Kelvin equivalent of room temperature at 25°C?
- Can you convert 25 C to K using a simple formula?
- How accurate is the conversion of 25 degrees Celsius to Kelvin?
Conversion Definitions
Celsius (c): Celsius is a temperature scale where zero degrees marks the freezing point of water and 100 degrees the boiling point at standard atmospheric pressure. This scale is used worldwide in science and daily life for measuring temperature.
Kelvin (k): Kelvin is the SI base unit for temperature, beginning at absolute zero, where no thermal energy exists. It increments in the same size units as Celsius but starts at -273.15 °C, making it useful in scientific measurements where negative temperatures are not used.
Conversion FAQs
Can Kelvin values be negative like Celsius?
No, Kelvin temperatures cannot be negative because zero Kelvin (absolute zero) represents the lowest possible temperature where particles have minimal motion. Celsius can have negatives, but Kelvin starts at 0 and goes upwards.
Why do scientists prefer Kelvin over Celsius for temperature measurements?
Scientists prefer Kelvin because it starts at absolute zero, making it easier for thermodynamic calculations. Kelvin scale avoids negative values, simplifying formulas in physics and chemistry, especially in gas laws and energy equations.
Is the conversion of Celsius to Kelvin exact or approximate?
The conversion is exact because the difference between Celsius and Kelvin is a fixed constant of 273.15. There is no approximation involved when adding this number to Celsius values.
How would I convert temperature from Kelvin back to Celsius?
To convert Kelvin back to Celsius, you subtract 273.15 from the Kelvin value. For example, 298.15 K minus 273.15 equals 25 °C.
Does converting Celsius to Kelvin change the physical temperature?
No, converting units does not change the physical temperature. It only changes the numerical representation based on different zero points of temperature scales.