Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin.
Celsius: -
Fahrenheit: -
Kelvin: -
What is Temperature Converter?
Temperature Converter instantly converts between Celsius (°C), Fahrenheit (°F), and Kelvin (K). Enter a value in any field and the other two update automatically.
Conversion formulas
- °F = (°C ÁE9/5) + 32
- °C = (°F ∁E32) ÁE5/9
- K = °C + 273.15
- °C = K ∁E273.15
Common reference points
- Water freezes: 0°C / 32°F / 273.15 K
- Water boils: 100°C / 212°F / 373.15 K
- Body temperature: ~37°C / 98.6°F / 310.15 K
- Absolute zero: ∁E73.15°C / ∁E59.67°F / 0 K
FAQ
- Which countries use Fahrenheit?
- The United States, its territories (Puerto Rico, Guam), and a few other countries use Fahrenheit for everyday temperature. Most of the world uses Celsius.
- Can temperature go below 0 Kelvin?
- No. Absolute zero (0 K) is the theoretical minimum temperature. It is physically impossible to go below it as it represents the complete absence of thermal energy.
- At what temperature are Celsius and Fahrenheit equal?
- They are equal at ∁E0°. Both ∁E0°C and ∁E0°F represent the same temperature.
Overview
Convert temperatures between Celsius, Fahrenheit, and Kelvin with the conversion formula shown. Useful for cooking, travel, science homework, and weather comparisons.
How to use
- Enter a temperature value.
- Select the source unit (°C, °F, or K).
- Read the converted values and the formula used.
Examples
-
Oven setting
Input: 350°F
Output: About 176.7°C for a recipe written in Fahrenheit.
-
Science homework
Input: 25°C
Output: 298.15 K for lab calculations.
Notes
- Kelvin has no degree symbol and cannot go below 0 K (absolute zero).
- Rounding is for display; intermediate calculations keep full precision.
- Conversions are computed locally in your browser.
FAQ
- What formula converts Celsius to Fahrenheit?
- °F = °C × 9/5 + 32. For example, 20°C equals 68°F.
- Why does Kelvin matter?
- Kelvin is the SI base unit of temperature used in science. 0 K is absolute zero, which is -273.15°C.
- Is negative Kelvin valid?
- No. Temperatures below absolute zero are physically impossible, so the tool flags such inputs.
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