21°C to Kelvin
21°C = 294.15K
Nearby temperatures
| Celsius | Kelvin |
|---|---|
| 17°C | 290.15K |
| 18°C | 291.15K |
| 19°C | 292.15K |
| 20°C | 293.15K |
| 21°C | 294.15K |
| 22°C | 295.15K |
| 23°C | 296.15K |
| 24°C | 297.15K |
| 25°C | 298.15K |
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 21°C in Kelvin?
21°C is 294.15K.
Is 21°C hot or cold?
Mild and comfortable for most people.
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