Convert Kelvin to Celsius

Simple, fast and user-friendly online tool to convert Kelvin to Celsius ( K to °C ) vice-versa and other Temperature related units. Learn and share how to convert Kelvin to Celsius ( K to °C ). Click to expand short unit definition.

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   Kelvin (K) =    Celsius (°C)

What is Kelvin ?

Kelvin (K) is a unit of measurement for temperature in the International System of Units (SI), commonly known as the metric system. It is named after the physicist Lord Kelvin, who proposed the scale. Kelvin is widely used in scientific and engineering contexts, especially in fields like physics, chemistry, and astronomy.

To understand Kelvin:
- The Kelvin scale is based on absolute zero, which is the lowest theoretically possible temperature where all molecular motion ceases. Absolute zero is defined as 0 Kelvin (0 K).
- Unlike Celsius and Fahrenheit scales, Kelvin does not use degrees; temperatures are expressed in Kelvins.

In everyday terms, Kelvin provides a precise and absolute measure of temperature that is particularly useful in scientific research and engineering applications. It is often used in contexts where precise temperature control and measurement are critical, such as in laboratory experiments, industrial processes, and space exploration.

To convert temperatures between Kelvin and Celsius:
- To convert from Kelvin to Celsius: °C = K - 273.15
- To convert from Celsius to Kelvin: K = °C + 273.15

Understanding Kelvin is important for scientists, engineers, and researchers who work with temperature-sensitive materials and processes. It allows for accurate calculations and comparisons across different scientific disciplines, providing a universal standard for temperature measurement that is based on fundamental principles of physics.


What is Celsius ?

Celsius (°C) is a unit of measurement for temperature in the metric system. It is named after the Swedish astronomer Anders Celsius, who proposed the scale in 1742. The Celsius scale is widely used worldwide, except in the United States where Fahrenheit is more commonly used.

To understand Celsius:
- Water freezes at 0°C and boils at 100°C at standard atmospheric pressure (sea level).
- The Celsius scale is divided into 100 equal parts between the freezing and boiling points of water.

In everyday terms, Celsius is used to measure the temperature of the air, water, and many other substances. It provides a straightforward way to understand temperature changes and weather forecasts. For example, room temperature is typically around 20-25°C, while a hot summer day might reach 30°C or higher.

Celsius is based on the properties of water, making it a practical scale for scientific and everyday use. It is easy to convert between Celsius and Kelvin (another temperature scale used in scientific contexts) because they share the same size of degree. Understanding Celsius is essential for weather reporting, cooking, climate studies, and everyday activities where temperature plays a crucial role.

List of Temperature conversion units
Celsius Fahrenheit Kelvin Rankine