Kelvin Temperature Converter
Convert temperatures between Kelvin (K), Celsius (°C), and Fahrenheit (°F). Perfect for scientific calculations and absolute temperature measurements.
Kelvin to Celsius
K
°C
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Kelvin to Fahrenheit
K
°F
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Kelvin Conversion Formulas
Kelvin to Celsius
Formula
°C = K - 273.15Step-by-Step
- 1Take the temperature in Kelvin
- 2Subtract 273.15 from it
- 3The result is the temperature in Celsius
Example
Convert 293.15 K to Celsius:
293.15 - 273.15 = 20°CKelvin to Fahrenheit
Formula
°F = (K - 273.15) × 9/5 + 32Step-by-Step
- 1Take the temperature in Kelvin
- 2Subtract 273.15
- 3Multiply by 9/5
- 4Add 32
- 5The result is the temperature in Fahrenheit
Example
Convert 293.15 K to Fahrenheit:
(293.15 - 273.15) × 9/5 + 32 = 20 × 1.8 + 32 = 68°FImportant Kelvin Temperatures
0 K
-273.15°C|-459.67°F
Absolute zero
273.15 K
0°C|32°F
Water freezes
293.15 K
20°C|68°F
Room temperature
310.15 K
37°C|98.6°F
Body temperature
373.15 K
100°C|212°F
Water boils
5778 K
5504.85°C|9940.73°F
Sun's surface
Temperature Conversion Table
| Celsius (°C) | Fahrenheit (°F) | Kelvin (K) | Context |
|---|---|---|---|
| -40°C | -40°F | 233.15 K | Extremely cold |
| -30°C | -22°F | 243.15 K | Very cold |
| -20°C | -4°F | 253.15 K | Cold winter day |
| -10°C | 14°F | 263.15 K | Freezing |
| 0°C | 32°F | 273.15 K | Water freezes |
| 10°C | 50°F | 283.15 K | Cool day |
| 20°C | 68°F | 293.15 K | Room temperature |
| 30°C | 86°F | 303.15 K | Warm day |
| 40°C | 104°F | 313.15 K | Hot day |
| 50°C | 122°F | 323.15 K | Very hot |
| 60°C | 140°F | 333.15 K | Extremely hot |
| 70°C | 158°F | 343.15 K | Desert heat |
| 80°C | 176°F | 353.15 K | Dangerously hot |
| 90°C | 194°F | 363.15 K | Near boiling |
| 100°C | 212°F | 373.15 K | Water boils |
Extremely cold
-40°C
=
-40°F
=
233.15K
Very cold
-30°C
=
-22°F
=
243.15K
Cold winter day
-20°C
=
-4°F
=
253.15K
Freezing
-10°C
=
14°F
=
263.15K
Water freezes
0°C
=
32°F
=
273.15K
Cool day
10°C
=
50°F
=
283.15K
Room temperature
20°C
=
68°F
=
293.15K
Warm day
30°C
=
86°F
=
303.15K
Hot day
40°C
=
104°F
=
313.15K
Very hot
50°C
=
122°F
=
323.15K
Extremely hot
60°C
=
140°F
=
333.15K
Desert heat
70°C
=
158°F
=
343.15K
Dangerously hot
80°C
=
176°F
=
353.15K
Near boiling
90°C
=
194°F
=
363.15K
Water boils
100°C
=
212°F
=
373.15K
Disclaimer: This temperature converter provides calculations for informational and educational purposes only. For medical decisions (such as assessing body temperature or fever), cooking safety, industrial applications, or any situation where precise temperature measurements are critical, please consult with a qualified professional or use calibrated instruments. Always verify important temperature readings with appropriate equipment and expertise.
About the Kelvin Scale
The Kelvin scale (K) is the SI base unit of temperature. It's an absolute temperature scale starting at absolute zero (0 K), the theoretical point where all molecular motion stops. Unlike Celsius and Fahrenheit, Kelvin doesn't use degree symbols. The scale is widely used in scientific and engineering applications.
Key Kelvin Facts
- Absolute Zero: 0 K = -273.15°C = -459.67°F
- Water Freezes: 273.15 K = 0°C = 32°F
- Room Temperature: ~293 K = 20°C = 68°F
- Water Boils: 373.15 K = 100°C = 212°F
- Named After: Lord Kelvin (William Thomson)
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