-40°C to Kelvin
-40°C = 233.15K
Nearby temperatures
| Celsius | Kelvin |
|---|---|
| -44°C | 229.15K |
| -43°C | 230.15K |
| -42°C | 231.15K |
| -41°C | 232.15K |
| -40°C | 233.15K |
| -39°C | 234.15K |
| -38°C | 235.15K |
| -37°C | 236.15K |
| -36°C | 237.15K |
The formula
K = °C + 273.15About the scales
Celsius — The Celsius scale puts the freezing point of water at 0° and its boiling point at 100° at standard pressure.
Kelvin — The kelvin is the SI base unit of temperature, starting at absolute zero; it uses the same degree size as Celsius.
Frequently asked questions
What is -40°C in Kelvin?
-40°C is 233.15K.
Is -40°C hot or cold?
Very cold — well below freezing.
Convert other temperatures
- -40°C to Kelvin
- -20°C to Kelvin
- -10°C to Kelvin
- 0°C to Kelvin
- 5°C to Kelvin
- 10°C to Kelvin
- 15°C to Kelvin
- 18°C to Kelvin
- 20°C to Kelvin
- 21°C to Kelvin
- 22°C to Kelvin
- 25°C to Kelvin
- 28°C to Kelvin
- 30°C to Kelvin
- 32°C to Kelvin
- 35°C to Kelvin
- 37°C to Kelvin
- 37.5°C to Kelvin
- 38°C to Kelvin
- 39°C to Kelvin
- 40°C to Kelvin
- 45°C to Kelvin
- 50°C to Kelvin
- 60°C to Kelvin
- 70°C to Kelvin
- 80°C to Kelvin
- 90°C to Kelvin
- 100°C to Kelvin
- 150°C to Kelvin
- 180°C to Kelvin
- 200°C to Kelvin
- 220°C to Kelvin
- 250°C to Kelvin
- 350°C to Kelvin
- 400°C to Kelvin
- 425°C to Kelvin
- 450°C to Kelvin