Introduction
Common units of temperature (Celsius, Fahrenheit, Kelvin)
Temperature is a measure of the average thermal motion of molecules or atoms inside an object, in other words, a measure that describes how hot or cold an object is. Common units of temperature are degrees Celsius (°C), degrees Fahrenheit (°F), and Kelvin (K). In different occasions and countries, the temperature unit used may be different.
Celsius
Degrees Celsius is one of the most commonly used units of temperature, often used in scientific research and in real life. The Celsius scale is based on the freezing and boiling points of water. The meaning of Celsius means that at 1 standard atmospheric pressure, the temperature of the pure ice-water mixture is 0 degrees, and the boiling point of water is 100 degrees, which is divided into 100 parts on average, and each part is 1 degree, which is recorded as 1 ° C. Celsius is now incorporated into the International System of Units (SI).
1 ° C is equal to 1/100 of the difference between the freezing point and the boiling point of water on the Celsius scale.
Fahrenheit
Fahrenheit is a widely used temperature unit, commonly employed in commercial and daily life. The Fahrenheit scale is calibrated based on the freezing point of water and the average human body temperature.
Under the Fahrenheit scale, the freezing point of water is 32°F, and the average human body temperature is 98.6°F. Therefore, the average human body temperature is 66.6°F higher than the freezing point of water.（98.6-32=66.6℉）
Kelvin
Kelvin is the fundamental unit of temperature in the International System of Units, commonly used in the fields of physics and chemistry. The Kelvin scale is based on absolute zero, which is 0 K.
Conversion Relationships Among Different Temperature Units
Celsius (°C) to Fahrenheit (°F) Conversion:
Celsius to Fahrenheit: °F = (°C × 9/5) 32
Fahrenheit to Celsius: °C = (°F - 32) × 5/9
Celsius (°C) to Kelvin (K) Conversion:
Celsius to Kelvin: K = °C 273.15
Kelvin to Celsius: °C = K - 273.15
Fahrenheit (°F) to Kelvin (K) Conversion:
Fahrenheit to Kelvin: K = (°F 459.67) × 5/9
Kelvin to Fahrenheit: °F = (K × 9/5) - 459.67
Application Examples of Temperature Conversion:
Converting Celsius to Fahrenheit:
If an object has a temperature of 25°C, the calculation formula to convert it to °F is as follows:
Fahrenheit = (25 × 9/5) 32 = 77°F
So, 25°C is equal to 77°F.
Converting Fahrenheit to Kelvin:
If the temperature of hot water is 200°F, the calculation formula to convert it to Kelvin is as follows:
Kelvin = (200 459.67) × 5/9 ≈ 366.483K
So, 200°F is approximately equal to 366.483K.
Temperature Conversion Table for Celsius and Fahrenheit
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