Celsius to Kelvin conversion: °C to K calculator (2024)

Celsius to Kelvin (°C to K) conversion calculator

Kelvin to Celsius (K to °C) (Swap units)

20°C = 293.15K

Accuracy

Note: You can increase or decrease the accuracy of this answer by selecting the number of significant figures required from the options above the result.

Celsius to Kelvin (°C to K) conversion formula

Kelvin = Celsius + 273.15

Celsius to Kelvin calculation

Kelvin = Celsius + 273.15

Kelvin = 0 + 273.15

Kelvin = 273.15

Converting from Celsius to Kelvin

Celsius to Kelvin conversions are easy as the degree interval between both scales are identical. To convert Celsius to Kelvin simply add 273.15 to the value.

For example, if you had a temperature of 25 degrees Celsius, add 273.15 to this as follows: 25 + 273.15 = 298.15K.

For every change of a degree Celsius, it is equivalent to a change of one degree in Kelvin.

Why convert from Celsius to Kelvin?

Celsius is commonly used for everyday measurements whereas Kelvin is preferred for scientific calculations- the scales are essentially the same but start in a different place. The Kelvin scale is an absolute temperature scale that starts at absolute zero.

One of the reasons that you might want to convert from Celsius to Kelvin is to get rid of negative values. In the Celsius scale zero degrees represents the freezing point of water so everything below this has a negative value which can make certain calculations tricky. By converting to Kelvin you eliminate all negative values (as you cannot have a negative Kelvin temperature) which can make calculations easier.

Also, Kelvin is used extensively in science equations such as the ideal gas law and thermodynamics. Equations on this subject involve temperature differences or ratios and using Kelvin ensures that the calculations are consistent

About the Celsius scale

Celsius is a unit of temperature also known as centigrade. It is named after the Swedish astronomer Anders Celsius who created the scale in 1742. The Celsius scale is the most commonly used temperature scale worldwide despite not being widespread in the US.

Celsius divides the range between the freezing and boiling points of water into 100 equal degrees. The freezing point of water is 0 degrees Celsius (0°C) and the boiling point of water is 100 degrees Celsius (100°C). This makes it convenient for measuring everyday temperatures.

Celsius is normally used in weather forecasts (apart from in the US), science and general temperature measurements. It provides a simple way to express temperature with positive values indicating temperatures above freezing and negative values for temperatures below freezing.

About the Kelvin scale

Kelvin is based on Celsius but with a different starting point. It is an absolute scale meaning that it starts at absolute zero; the point at which all molecular motion ceases. The Celsius scale starts at the freezing point of water.

Each increment of the Kelvin scale is the same as a Celsius degree. The difference is the zero point; on the Kelvin scale is absolute zero which is equivalent to -273.15 degrees Celsius. This means that the Kelvin scale doesn't have negative values as all temperatures are measured relative to absolute zero.

The Kelvin scale is almost exclusively used in science such as physics and chemistry.

What happens at absolute zero (0K)?

At absolute zero, 0 Kelvin (0K) or -273.15 degrees Celsius, the temperature is at the lowest possible point anything can possibly be. At this temperature the kinetic energy of atoms and molecules is zero causing them to come to a complete standstill. All molecular motion ceases and matter becomes still.

Several amazing phenomena occur here. As there is no molecular motion there is no heat energy and this has significant implications for the physical properties of the substance. For example, materials become very brittle and their electrical resistance becomes zero. Gases and liquids freeze into solids.

Scientists have never cooled anything down to absolute zero. However they have been able to see the effects of approaching absolute zero. This has provided insights into the behavior of matter and have led to the understanding of superconductors and Bose-Einstein condensates.

Celsius to Kelvin table

Starting value

Increment

Accuracy

Celsius

Kelvin

0°C

273.15000K

1°C

274.15000K

2°C

275.15000K

3°C

276.15000K

4°C

277.15000K

5°C

278.15000K

6°C

279.15000K

7°C

280.15000K

8°C

281.15000K

10°C

283.15000K

11°C

284.15000K

12°C

285.15000K

13°C

286.15000K

14°C

287.15000K

15°C

288.15000K

16°C

289.15000K

17°C

290.15000K

18°C

291.15000K

19°C

292.15000K

Celsius

Kelvin

20°C

293.15000K

21°C

294.15000K

22°C

295.15000K

23°C

296.15000K

24°C

297.15000K

25°C

298.15000K

26°C

299.15000K

27°C

300.15000K

28°C

301.15000K

29°C

302.15000K

30°C

303.15000K

31°C

304.15000K

32°C

305.15000K

33°C

306.15000K

34°C

307.15000K

35°C

308.15000K

36°C

309.15000K

37°C

310.15000K

38°C

311.15000K

39°C

312.15000K

Celsius

Kelvin

40°C

313.15000K

41°C

314.15000K

42°C

315.15000K

43°C

316.15000K

44°C

317.15000K

45°C

318.15000K

46°C

319.15000K

47°C

320.15000K

48°C

321.15000K

49°C

322.15000K

50°C

323.15000K

51°C

324.15000K

52°C

325.15000K

53°C

326.15000K

54°C

327.15000K

55°C

328.15000K

56°C

329.15000K

57°C

330.15000K

58°C

331.15000K

59°C

332.15000K

Celsius

Kelvin

60°C

333.15000K

61°C

334.15000K

62°C

335.15000K

63°C

336.15000K

64°C

337.15000K

65°C

338.15000K

66°C

339.15000K

67°C

340.15000K

68°C

341.15000K

69°C

342.15000K

70°C

343.15000K

71°C

344.15000K

72°C

345.15000K

73°C

346.15000K

74°C

347.15000K

75°C

348.15000K

76°C

349.15000K

77°C

350.15000K

78°C

351.15000K

79°C

352.15000K

Popular links

  1. Celsius to Fahrenheit
  2. Fahrenheit to Celsius
  3. Celsius to Kelvin (°C to K)
  4. Kelvin to Celsius (K to °C)
  5. Fahrenheit to Kelvin
  6. Kelvin to Fahrenheit
Celsius to Kelvin conversion: °C to K calculator (2024)

FAQs

How do you convert C to K? ›

How do you convert Celsius to Kelvin formula? The conversion of Celsius to Kelvin: Kelvin = Celsius + 273.15. Instead of 273.15 the value of 273 is also used.

What is the formula for K to Celsius? ›

The formula to convert Kelvin into Celsius is C = K - 273.15. All that is needed to convert Kelvin to Celsius is one simple step: Take your Kelvin temperature and subtract 273.15. Your answer will be in Celsius.

What is a temperature of 20 C equivalent to in K? ›

T(K)=T(°C)+273.15⟹T(K)=20+273.15=293.15K. Was this answer helpful? Convert 20oC into Kelvin and Fahrenheit scale.

What is 35 in Kelvin? ›

Thus 35°C will be equal to 273+35=308K.

How is 1 C equal to 1 K? ›

Celsius vs Kelvin

The scales differ by 273.15. Thus, to convert from °C to K simply add 273; if a thermometer reads 31°C then the temperature in Kelvin is 304K. Celsius is a much more "user friendly" or intuitive way to measure temperature; at 0°C—water freezes, and at 100°C—water boils.

What is the conversion formula for Celsius to Fahrenheit to Kelvin? ›

Here are 3 conversion rate formulas to use:

Conversion Rate = Total number of conversions / Total number of sessions * 100. Conversion Rate = Total number of conversions / Total number of unique visitors * 100. Conversion Rate = Total number of conversions / Total number of leads * 100.

At what temperature C and K are equal? ›

Never. The degree increment of the Celsius and Kelvin scales are equal by definition, so adding one degree C will also add one K. Since they do not start out equal (0 K = -273 C) and they increase at the same rate, they will never be equal.

What is 25 C temperature to the Kelvin scale? ›

The correct answer is 298K. The basic formula is °C + 273.15 = K. So, reading on a Kelvin scale is 25C + 273 = 298K.

Is 30000 Kelvin hot? ›

About 30,000 Kelvin, or 53,500 °F.

This is much hotter than the temperature of the surface of the sun, which is 6,000 Kelvin (about 10,300 °F), but not nearly as hot as the core of the sun, whose temperature is more than tens of millions Kelvin.

What does 3500 Kelvin mean? ›

As a quick rule, the higher the Kelvin, the whiter the light. Household fixtures are commonly found in color temperatures on the Kelvin scale of 2700K (warm incandescent), 3000K (warm white halogen) and 3500K (household fluorescent).

What is K in Kelvin? ›

The kelvin (abbreviation K), less commonly called the degree Kelvin (symbol, o K), is the Standard International ( SI ) unit of thermodynamic temperature. One kelvin is formally defined as 1/273.16 (3.6609 x 10 -3 ) of the thermodynamic temperature of the triple point of pure water (H 2 O).

How do you convert 1 K to 1 C? ›

3. How do I convert from 1/k to 1/c? To convert from 1/k to 1/c, subtract 273.15 from the temperature in Kelvin. For example, if the temperature is 300 Kelvin, the conversion would be 1/c = (1/300) - 273.15 = - 272.85.

What is the formula for Fahrenheit to Kelvin? ›

The Formula Used for Temperature Conversion of Fahrenheit and Kelvin is: The formula used to convert temperature from Fahrenheit to Kelvin is, K = (F − 32) × 5 ⁄ 9 + 273.15. The formula used to convert temperature from Kelvin to Fahrenheit is, F = (K – 273.15) × 9 ⁄ 5 + 32.

What is the formula of Celsius Fahrenheit and Kelvin? ›

Temperature Conversion Formula Table
UnitTo CelsiusTo Kelvin
Celsius (C)C (°)C + 273.15
Fahrenheit(F − 32) × 5⁄9(F − 32) × 5⁄9 + 273.15
KelvinK – 273.15K

What is the fraction K to C? ›

Kelvin to Celcius: C = K - 273.15. Fahrenheit to Celcius: C = (F-32) (5/9) Celsius to Fahrenheit: F = C(9/5) + 32. Fahrenheit to Kelvin: K = (F-32) (5/9) + 273.15.

Top Articles
Latest Posts
Article information

Author: Rev. Leonie Wyman

Last Updated:

Views: 5797

Rating: 4.9 / 5 (79 voted)

Reviews: 94% of readers found this page helpful

Author information

Name: Rev. Leonie Wyman

Birthday: 1993-07-01

Address: Suite 763 6272 Lang Bypass, New Xochitlport, VT 72704-3308

Phone: +22014484519944

Job: Banking Officer

Hobby: Sailing, Gaming, Basketball, Calligraphy, Mycology, Astronomy, Juggling

Introduction: My name is Rev. Leonie Wyman, I am a colorful, tasty, splendid, fair, witty, gorgeous, splendid person who loves writing and wants to share my knowledge and understanding with you.