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Degrees Celsius to Kelvin (°C to K)
Convert degrees Celsius to kelvin with the formula K = °C + 273.15. Conversion table and worked examples, with JSON API and MCP access.
Formula
K = °C + 273.15
K = °C + 273.15 — reverse: °C = K − 273.15
Non-linear conversion: the formula above is applied directly (no single multiplication factor).
Worked examples
- 37 °C = 310.15 K
- 100 °C = 373.15 K
- -40 °C = 233.15 K
Degrees Celsius to kelvin conversion table
| Degrees Celsius (°C) | Kelvin (K) |
|---|---|
| -40 | 233.15 |
| -30 | 243.15 |
| -20 | 253.15 |
| -10 | 263.15 |
| 0 | 273.15 |
| 5 | 278.15 |
| 10 | 283.15 |
| 15 | 288.15 |
| 20 | 293.15 |
| 25 | 298.15 |
| 30 | 303.15 |
| 35 | 308.15 |
| 37 | 310.15 |
| 40 | 313.15 |
| 50 | 323.15 |
| 60 | 333.15 |
| 70 | 343.15 |
| 80 | 353.15 |
| 90 | 363.15 |
| 100 | 373.15 |
| 150 | 423.15 |
| 200 | 473.15 |
FAQ
What is the formula to convert degrees Celsius to kelvin?
K = °C + 273.15. For example, 37 °C = 310.15 K.
How do I convert kelvin back to degrees Celsius?
°C = K − 273.15; the kelvin-to-degrees Celsius page applies it directly.
Why is there no single multiplication factor?
Temperature scales have different zero points, so the conversion is an affine formula (scale and offset), not a plain multiplication.
Related conversions
- Kelvin to degrees Celsius (reverse)
- Temperature Converter — all temperature units in one tool
- Degrees Celsius to Degrees Fahrenheit
- Degrees Fahrenheit to Degrees Celsius
- Degrees Fahrenheit to Kelvin
- Kelvin to Degrees Fahrenheit
- Degrees Fahrenheit to Degrees Rankine
- Degrees Rankine to Degrees Fahrenheit
- Kelvin to Degrees Rankine
- Degrees Rankine to Kelvin
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=37&from_unit=C&to_unit=K - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":37,"from_unit":"C","to_unit":"K"} - Markdown: https://tttkmbb.com/conversion/celsius-to-kelvin.md · JSON: https://tttkmbb.com/conversion/celsius-to-kelvin.json (add
?value=for a result) · Units: /api/v1/units?quantity=temperature - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.