Kelvin to Celsius
Instantly convert Kelvin to Celsius with our simple and accurate tool. Ideal for students, scientists, and anyone in need of precise temperature conversions—effortless and reliable!
Kelvin to Celsius conversion: Subtract 273.15 from the value in Kelvin
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Kelvin
Definition
Kelvin (K) is the base unit of temperature measurement in the International System of Units (SI). It is an absolute temperature scale, starting at absolute zero, the theoretical point where all molecular motion ceases. Unlike other temperature scales, Kelvin does not use a degree symbol (°). Kelvin is directly related to Celsius, where 0 K equals –273.15°C.
History/Origin
The Kelvin scale was proposed by Scottish physicist William Thomson, 1st Baron Kelvin, in the mid-19th century. The scale was developed to provide an absolute measurement of temperature based on thermodynamic principles. Absolute zero (0 K) is defined as the point where no thermal energy remains in a substance. Kelvin’s scale has been pivotal in scientific advancements, particularly in physics and thermodynamics.
Current Use
Kelvin is widely used in scientific disciplines, including physics, chemistry, and astronomy. It is essential for research involving absolute temperature measurements and calculations related to energy, entropy, and thermodynamic systems. Kelvin is the preferred unit in laboratories, research papers, and international scientific collaborations.
Celsius
Definition
Celsius (°C) is a temperature scale widely used worldwide, especially in daily life and scientific contexts. It is part of the metric system and aligns with the properties of water, defining 0°C as the freezing point and 100°C as the boiling point of water at standard atmospheric pressure. The Celsius scale is denoted by the symbol °C.
History/Origin
The Celsius scale was introduced by Swedish astronomer Anders Celsius in 1742. Initially, the scale was reversed, with 0°C as the boiling point and 100°C as the freezing point of water. This was later standardized to its current format. Due to its logical intervals and connection to the metric system, Celsius became the most widely adopted temperature scale globally.
Current Use
Celsius is the standard temperature unit for weather forecasting, cooking, and industrial applications in most countries. It is also the preferred unit in scientific disciplines and is essential for academic and educational purposes. The compatibility of Celsius with the metric system ensures its widespread use across various fields and regions.
Conversion Details
Conversion Formula and Factor
To convert Kelvin (K) to Celsius (°C), use the following formula:
[ \text{°C} = K - 273.15 ]
Quick Reference Conversion Table
Step-by-Step Conversion Instructions
Example: Convert 298.15 K to Celsius
Start with the formula: [ \text{°C} = K - 273.15 ]
Subtract 273.15 from the Kelvin value: [ 298.15 - 273.15 = 25 ]
Result: 298.15 K equals 25°C.
Practical Examples
Example 1: Freezing Point of Water
Kelvin: 273.15 K
Conversion: [ \text{°C} = 273.15 - 273.15 = 0°C ]
Result: 273.15 K equals 0°C, the freezing point of water.
Example 2: Boiling Point of Water
Kelvin: 373.15 K
Conversion: [ \text{°C} = 373.15 - 273.15 ] [ \text{°C} = 100°C ]
Result: 373.15 K equals 100°C, the boiling point of water.
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