How to convert Kelvin to Celsius
Temperature scales have different zero points, so you cannot simply multiply. Use this formula:
Worked example: 37 K to °C
- Start with the value: 37 K
- Apply the formula above.
- Result: 37 K = -236.15 °C
Kelvin to Celsius conversion table
Quick reference values, rounded to 6 significant digits.
| Kelvin (K) | Celsius (°C) |
|---|---|
| -40 K | -313.15 °C |
| -20 K | -293.15 °C |
| -10 K | -283.15 °C |
| 0 K | -273.15 °C |
| 10 K | -263.15 °C |
| 20 K | -253.15 °C |
| 25 K | -248.15 °C |
| 30 K | -243.15 °C |
| 35 K | -238.15 °C |
| 36.6 K | -236.55 °C |
| 37 K | -236.15 °C |
| 38 K | -235.15 °C |
| 40 K | -233.15 °C |
| 50 K | -223.15 °C |
| 60 K | -213.15 °C |
| 80 K | -193.15 °C |
| 100 K | -173.15 °C |
| 150 K | -123.15 °C |
| 200 K | -73.15 °C |
Celsius to Kelvin
| °C | K |
|---|---|
| 0 °C | 273.15 K |
| 25 °C | 298.15 K |
| 50 °C | 323.15 K |
| 75 °C | 348.15 K |
| 100 °C | 373.15 K |
1 Kelvin in other temperature units
About Kelvin and Celsius
What is a kelvin (K)?
Kelvin is the SI unit of temperature. It starts at absolute zero (0 K = −273.15 °C) and is used in physics and chemistry.
What is a celsius (°C)?
The Celsius scale sets 0 °C as the freezing point and 100 °C as the boiling point of water at sea level. Bangladesh uses Celsius for weather.
Quick mental trick: to estimate °F from °C, double the Celsius value and add 30 (e.g. 30 °C ≈ 90 °F). Normal body temperature is 37 °C (98.6 °F); a fever starts around 38 °C (100.4 °F).
Where kelvin to celsius conversion is used
Temperature conversions are needed for weather reports, cooking and baking, body temperature, science labs and air-conditioner settings. Converting between Kelvin and Celsius is especially common when you compare products, read foreign specifications, or fill in forms that expect a specific unit.
Need every unit at once? Use the full Temperature Converter.
Frequently asked questions
How many Celsius are in 1 kelvin?
1 Kelvin equals -272.15 °C.
How do I convert Kelvin to Celsius?
Use the formula °C = K − 273.15. For example, 37 K = -236.15 °C.
What is 37 K in °C?
37 K = -236.15 °C.
How many Kelvin are in 1 celsius?
1 Celsius equals 274.15 K. Use the Celsius to Kelvin converter for the reverse direction.
Is this Kelvin to Celsius converter accurate?
Yes. It uses exact internationally defined conversion factors, calculated with full floating-point precision. Results are displayed rounded for readability.