Temperature Converter
Instantly convert temperatures between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with real-time results.
Temperature Conversion
Celsius (°C)
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Fahrenheit (°F)
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Kelvin (K)
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Temperature Conversion Formulas
°F = (°C × 9/5) + 32
°C = (°F − 32) × 5/9
K = °C + 273.15
°C = K − 273.15
Common Temperature Reference Points
| Point | °C | °F | K |
|---|---|---|---|
| Absolute Zero | -273.15 | -459.67 | 0 |
| Water Freezes | 0 | 32 | 273.15 |
| Normal Body Temp | 37 | 98.6 | 310.15 |
| Water Boils | 100 | 212 | 373.15 |
Frequently Asked Questions
What is the easiest way to convert Celsius to Fahrenheit?
A quick mental estimate: double the Celsius value and add 30. For example, 20°C ≈ (20×2)+30 = 70°F (actual: 68°F). For accuracy, use the formula °F = (°C × 9/5) + 32.
At what temperature are Celsius and Fahrenheit equal?
Celsius and Fahrenheit are equal at −40°. At −40°C = −40°F. This is the one unique point where both scales intersect.
Why does Kelvin not use the degree symbol?
Kelvin is an absolute thermodynamic scale and its unit is just called "kelvin" (not "degree kelvin"). Since it starts at absolute zero and has no negative values, the degree symbol is omitted by convention.