Temperature Converter: Celsius, Fahrenheit, Kelvin
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Temperature Converter

Convert temperatures between Celsius (°C), Fahrenheit (°F), and Kelvin (K) instantly.

The Three Major Temperature Scales

Temperature conversion is vital across science, engineering, and international weather reporting. The three most common scales are:

  • **Celsius (°C):** The most common metric scale, where $0^\circ \text{C}$ is the freezing point of water and $100^\circ \text{C}$ is the boiling point.
  • **Fahrenheit (°F):** Primarily used in the United States and a few Caribbean nations.
  • **Kelvin (K):** The absolute thermodynamic scale, used extensively in scientific research, where $0 \text{ K}$ is **Absolute Zero** (the coldest possible temperature).

Conversion Formulas:

All conversions must be referenced through a consistent base unit, in this case, **Kelvin**. The key formulas used are: $$ T_F = T_C \times \frac{9}{5} + 32 $$ $$ T_K = T_C + 273.15 $$ The lowest physically possible temperature is Absolute Zero ($0 \text{ K} / -273.15^\circ \text{C} / -459.67^\circ \text{F}$), which this calculator validates against.