Follow these steps to convert given Celsius value from Celsius units to Kelvin units.
Enter the input Celsius value in the text field.
The given Celsius is converted to Kelvin in realtime ⌚ using the formula, and displayed under the Kelvin label.
You may copy the resulting Kelvin value using the Copy button.
Formula
To convert given temperature from Celsius to Kelvin, use the following formula.
Kelvin = Celsius + 273.15
Calculation
Calculation will be done after you enter a valid input.
Celsius to Kelvin Conversion Table
The following table gives some of the most used conversions from Celsius to Kelvin.
Celsius (°C)
Kelvin (K)
0 °C
273.15K
1 °C
274.15K
2 °C
275.15K
3 °C
276.15K
4 °C
277.15K
5 °C
278.15K
6 °C
279.15K
7 °C
280.15K
8 °C
281.15K
9 °C
282.15K
10 °C
283.15K
20 °C
293.15K
50 °C
323.15K
100 °C
373.15K
1000 °C
1273.15K
Celsius
Celsius is a unit of temperature measurement that is part of the metric system. It is named after the Swedish astronomer Anders Celsius, who developed the scale. The Celsius scale sets the freezing point of water at 0 degrees and the boiling point at 100 degrees under standard atmospheric pressure. It is widely used in scientific and everyday contexts around the world.
Kelvin
The Kelvin scale is an absolute temperature scale named after the Scottish physicist William Thomson, 1st Baron Kelvin. It is commonly used in scientific and engineering applications where an absolute temperature reference is required. The Kelvin scale starts at absolute zero, the point at which all molecular motion ceases. The freezing point of water on the Kelvin scale is 273.15 K, and the boiling point is 373.15 K.
{
"conversion": "celsius-kelvin",
"x_slug": "celsius",
"y_slug": "kelvin",
"x": "°C",
"y": "K",
"x_desc": "Celsius",
"y_desc": "Kelvin",
"category": "Temperature",
"symbol": "m",
"formula": "x + 273.15",
"precision": 11,
"examples": "<div class=\"example\">\n <div class=\"example_head\"><span class=\"example_n\">1</span>\n <h3 class=\"question\">Consider that the temperature of a smartphone while running a heavy application reaches 45 degrees Celsius.<br>Convert this temperature from Celsius to Kelvin.</h3></div>\n <h4 class=\"answer\">Answer:</h4>\n <p><strong>Given:</strong></p>\n <p>The temperature in celsius is:</p>\n <p class=\"step\"><span>Temperature<sub>(Celsius)</sub></span> = 45</p>\n <p><strong>Formula:</strong></p>\n <p>The formula to convert temperature from celsius to kelvin is:</p>\n <p class=\"formula step\"><span>Temperature<sub>(Kelvin)</sub></span> = <span>Temperature<sub>(Celsius)</sub></span> + 273.15</p>\n <p><strong>Substitution:</strong></p>\n <p>Substitute given weight <strong>Temperature<sub>(Celsius)</sub> = 45</strong> in the above formula.</p>\n <p class=\"step\"><span>Temperature<sub>(Kelvin)</sub></span> = <span>45</span> + 273.15</p>\n <p class=\"step\"><span>Temperature<sub>(Kelvin)</sub></span> = 318.15</p>\n <p><strong>Final Answer:</strong></p>\n <p>Therefore, <strong>45 °C</strong> is equal to <strong>318.15 K</strong>.</p>\n <p>The temperature is <strong>318.15 K</strong>, in kelvin.</p>\n </div>\n <div class=\"example\">\n <div class=\"example_head\"><span class=\"example_n\">2</span>\n <h3 class=\"question\">Consider that the temperature outside during a heatwave is 38 degrees Celsius.<br>Convert this temperature from Celsius to Kelvin.</h3></div>\n <h4 class=\"answer\">Answer:</h4>\n <p><strong>Given:</strong></p>\n <p>The temperature in celsius is:</p>\n <p class=\"step\"><span>Temperature<sub>(Celsius)</sub></span> = 38</p>\n <p><strong>Formula:</strong></p>\n <p>The formula to convert temperature from celsius to kelvin is:</p>\n <p class=\"formula step\"><span>Temperature<sub>(Kelvin)</sub></span> = <span>Temperature<sub>(Celsius)</sub></span> + 273.15</p>\n <p><strong>Substitution:</strong></p>\n <p>Substitute given weight <strong>Temperature<sub>(Celsius)</sub> = 38</strong> in the above formula.</p>\n <p class=\"step\"><span>Temperature<sub>(Kelvin)</sub></span> = <span>38</span> + 273.15</p>\n <p class=\"step\"><span>Temperature<sub>(Kelvin)</sub></span> = 311.15</p>\n <p><strong>Final Answer:</strong></p>\n <p>Therefore, <strong>38 °C</strong> is equal to <strong>311.15 K</strong>.</p>\n <p>The temperature is <strong>311.15 K</strong>, in kelvin.</p>\n </div>\n ",
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"description": "converts temperature between given unit of temperature to other temperature units",
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"title": "Temperature<br>Converter"
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"img": "<img class=\"conversion\" src=\"/images/unit/temperature/celsius-kelvin.webp\" height=\"360\" width=\"640\" alt=\"Celsius to Kelvin Converter | °C to K\" />",
"faqs": [
{
"name": "How do I convert Celsius to Kelvin?",
"answer": "To convert Celsius to Kelvin, add 273.15 to the Celsius temperature. For example, if the temperature is 25°C, adding 273.15 gives you 298.15 K."
},
{
"name": "What is the formula for converting Celsius to Kelvin?",
"answer": "The formula is:\n\n\\( \\text{Kelvin} = \\text{Celsius} + 273.15 \\)."
},
{
"name": "Is 0 degrees Celsius equal to 273.15 Kelvin?",
"answer": "Yes, 0°C is equal to 273.15 K, which is the freezing point of water on the Kelvin scale."
},
{
"name": "How do I convert Kelvin to Celsius?",
"answer": "To convert Kelvin to Celsius, subtract 273.15 from the Kelvin temperature. For example, if you have 310 K, subtracting 273.15 gives you 36.85°C."
},
{
"name": "Why do we add 273.15 to convert Celsius to Kelvin?",
"answer": "Because 0 K represents absolute zero, the lowest possible temperature, adding 273.15 aligns the Celsius scale with the Kelvin scale so that both have equal-sized units but different starting points."
},
{
"name": "What is the difference between the Celsius and Kelvin scales?",
"answer": "Both scales use the same unit increment, but Celsius is based on the freezing point of water (0°C), while Kelvin starts at absolute zero (0 K)."
},
{
"name": "How many Kelvin are in 100 degrees Celsius?",
"answer": "Using the formula: \\( 100\\,°C + 273.15 = 373.15\\,K \\). So, 100°C is equal to 373.15 K."
},
{
"name": "What is absolute zero in Celsius and Kelvin?",
"answer": "Absolute zero is the lowest theoretical temperature, equal to 0 K or -273.15°C."
}
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"name": "How do I convert Celsius to Kelvin?",
"acceptedAnswer": {
"@type": "Answer",
"text": "To convert Celsius to Kelvin, add 273.15 to the Celsius temperature. For example, if the temperature is 25°C, adding 273.15 gives you 298.15 K."
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{
"@type": "Question",
"name": "What is the formula for converting Celsius to Kelvin?",
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"text": "The formula is:\n\n\\( \\text{Kelvin} = \\text{Celsius} + 273.15 \\)."
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"text": "Yes, 0°C is equal to 273.15 K, which is the freezing point of water on the Kelvin scale."
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"name": "How do I convert Kelvin to Celsius?",
"acceptedAnswer": {
"@type": "Answer",
"text": "To convert Kelvin to Celsius, subtract 273.15 from the Kelvin temperature. For example, if you have 310 K, subtracting 273.15 gives you 36.85°C."
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"@type": "Question",
"name": "Why do we add 273.15 to convert Celsius to Kelvin?",
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"text": "Because 0 K represents absolute zero, the lowest possible temperature, adding 273.15 aligns the Celsius scale with the Kelvin scale so that both have equal-sized units but different starting points."
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{
"@type": "Question",
"name": "What is the difference between the Celsius and Kelvin scales?",
"acceptedAnswer": {
"@type": "Answer",
"text": "Both scales use the same unit increment, but Celsius is based on the freezing point of water (0°C), while Kelvin starts at absolute zero (0 K)."
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"@type": "Question",
"name": "How many Kelvin are in 100 degrees Celsius?",
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"@type": "Answer",
"text": "Using the formula: \\( 100\\,°C + 273.15 = 373.15\\,K \\). So, 100°C is equal to 373.15 K."
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"name": "What is absolute zero in Celsius and Kelvin?",
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"table1n": "<h2><span class=\"x\">Celsius</span> to <span class=\"y\">Kelvin</span> Conversion Table</h2><p>The following table gives some of the most used conversions from Celsius to Kelvin.</p><table><thead><tr><th scope=\"column\" role=\"columnheader\">Celsius (<span class=\"unit\">°C</span>)</th><th scope=\"column\" role=\"columnheader\">Kelvin (<span class=\"unit\">K</span>)</th><tr></thead><tbody><tr><td>0 <span class=\"unit\">°C</span></td><td>273<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>1 <span class=\"unit\">°C</span></td><td>274<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>2 <span class=\"unit\">°C</span></td><td>275<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>3 <span class=\"unit\">°C</span></td><td>276<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>4 <span class=\"unit\">°C</span></td><td>277<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>5 <span class=\"unit\">°C</span></td><td>278<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>6 <span class=\"unit\">°C</span></td><td>279<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>7 <span class=\"unit\">°C</span></td><td>280<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>8 <span class=\"unit\">°C</span></td><td>281<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>9 <span class=\"unit\">°C</span></td><td>282<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>10 <span class=\"unit\">°C</span></td><td>283<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>20 <span class=\"unit\">°C</span></td><td>293<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>50 <span class=\"unit\">°C</span></td><td>323<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>100 <span class=\"unit\">°C</span></td><td>373<span>.15</span> <span class=\"unit\">K</span></td></tr><tr><td>1000 <span class=\"unit\">°C</span></td><td>1273<span>.15</span> <span class=\"unit\">K</span></td></tr></table>",
"units": [
[
"celsius",
"Celsius",
"°C"
],
[
"fahrenheit",
"Fahrenheit",
"°F"
],
[
"kelvin",
"Kelvin",
"K"
],
[
"newton",
"Newton",
"°N"
],
[
"delisle",
"Delisle",
"°De"
],
[
"rankine",
"Rankine",
"°R"
],
[
"reaumur",
"Réaumur",
"°Ré"
],
[
"romer",
"Rømer",
"°Rø"
]
],
"x_long_desc": "Celsius is a unit of temperature measurement that is part of the metric system. It is named after the Swedish astronomer Anders Celsius, who developed the scale. The Celsius scale sets the freezing point of water at 0 degrees and the boiling point at 100 degrees under standard atmospheric pressure. It is widely used in scientific and everyday contexts around the world.",
"y_long_desc": "The Kelvin scale is an absolute temperature scale named after the Scottish physicist William Thomson, 1st Baron Kelvin. It is commonly used in scientific and engineering applications where an absolute temperature reference is required. The Kelvin scale starts at absolute zero, the point at which all molecular motion ceases. The freezing point of water on the Kelvin scale is 273.15 K, and the boiling point is 373.15 K."
}
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