K to °C to K – Kelvin Celsius Bidirectional Temperature Converter

Kelvin ⇄ Celsius Temperature Converter

This bidirectional calculator converts temperatures between Kelvin (K) and Celsius (°C) scales in both directions. Kelvin is the base unit of thermodynamic temperature in the International System of Units (SI), while Celsius is widely used in scientific and everyday applications worldwide.
Conversion Formulas
Kelvin to Celsius: °C = K - 273.15
Celsius to Kelvin: K = °C + 273.15
Example Calculations

Convert 298.15 K to Celsius:

°C = 298.15 - 273.15 = 25.00°C

Convert 100°C to Kelvin:

K = 100 + 273.15 = 373.15 K

Room temperature (298.15 K = 25°C) and boiling point of water (373.15 K = 100°C).

Bidirectional Conversion
Convert from Kelvin to Celsius or Celsius to Kelvin with a simple dropdown selection.
Precision Control
Choose decimal places from 0 to 4 for results suited to your specific requirements.
Real-time Calculation
Instant results as you type, with formula display showing the calculation process.
Visual Representation
Interactive diagram illustrating the temperature conversion relationship.
💡 Key Point: The difference between Kelvin and Celsius scales is exactly 273.15 units. Kelvin starts at absolute zero (-273.15°C), making it essential for scientific calculations involving thermodynamics and gas laws.