Table of Contents
Temperature Conversion Formula
Introduction:
There are several temperature scales used worldwide, including Celsius (°C), Fahrenheit (°F), and Kelvin (K). Here, we’ll discuss the formulas for converting between these temperature scales.
Temperature Conversion Formulas:
Celsius to Fahrenheit:
The formula to convert temperature from Celsius to Fahrenheit is:
°F = (°C × 9/5) + 32
In this formula, you multiply the Celsius temperature by 9/5 and then add 32 to obtain the equivalent Fahrenheit temperature.
Fahrenheit to Celsius:
The formula to convert temperature from Fahrenheit to Celsius is:
°C = (°F – 32) × 5/9
To convert from Fahrenheit to Celsius, you subtract 32 from the Fahrenheit temperature and then multiply the result by 5/9.
Celsius to Kelvin:
The Kelvin scale is an absolute temperature scale, where 0 Kelvin (0 K) corresponds to absolute zero (the lowest possible temperature). To convert from Celsius to Kelvin, you use the formula:
K = °C + 273.15
Simply add 273.15 to the Celsius temperature to obtain the equivalent temperature in Kelvin.
Kelvin to Celsius:
To convert from Kelvin to Celsius, you use the formula:
°C = K – 273.15
By subtracting 273.15 from the Kelvin temperature, you obtain the temperature in Celsius.
Note: The Celsius and Kelvin scales have the same magnitude of temperature units; the only difference is the zero point (absolute zero) and the starting point (freezing point of water) on the scales.
These temperature conversion formulas are essential for converting temperatures between different scales and are widely used in scientific, engineering, and everyday contexts.
Solved Examples on Temperature Formula:
Example 1: Convert 25 degrees Celsius to Fahrenheit.
Solution:
Using the Celsius to Fahrenheit formula:
°F = (°C × 9/5) + 32
Substituting the given value:
°F = (25 × 9/5) + 32
°F = (225/5) + 32
°F = 45 + 32
°F = 77
Therefore, 25 degrees Celsius is equal to 77 degrees Fahrenheit.
Example 2: Convert 98.6 degrees Fahrenheit to Celsius.
Solution:
Using the Fahrenheit to Celsius formula:
°C = (°F – 32) × 5/9
Substituting the given value:
°C = (98.6 – 32) × 5/9
°C = 66.6 × 5/9
°C = 333/9
°C ≈ 37.0
Therefore, 98.6 degrees Fahrenheit is approximately equal to 37.0 degrees Celsius.
Example 3: Convert 300 Kelvin to Celsius.
Solution:
Using the Kelvin to Celsius formula:
°C = K – 273.15
Substituting the given value:
°C = 300 – 273.15
°C ≈ 26.85
Therefore, 300 Kelvin is approximately equal to 26.85 degrees Celsius.
Frequently Asked Questions on Temperature Conversion Formula:
1: What are the three formulas for temperature conversions?
Answer: There are three common formulas for temperature conversions between Celsius (C), Fahrenheit (F), and Kelvin (K). The formulas are as follows:
- Celsius to Fahrenheit: F = (C × 9/5) + 32. Multiply the Celsius temperature by 9/5 and then add 32 to obtain the equivalent Fahrenheit temperature.
- Fahrenheit to Celsius: C = (F – 32) × 5/9. Subtract 32 from the Fahrenheit temperature and then multiply the result by 5/9 to get the corresponding Celsius temperature.
- Celsius to Kelvin: K = C + 273.15. Simply add 273.15 to the Celsius temperature to convert it to Kelvin.
These formulas provide a way to convert temperatures between Celsius, Fahrenheit, and Kelvin scales, allowing for easy comparison and understanding in different temperature systems.
2: What is the SI unit of temperature?
Answer: The SI unit of temperature is the Kelvin (K), which is an absolute temperature scale. Zero Kelvin represents absolute zero, the point of complete absence of molecular motion. The Kelvin scale is commonly used in scientific and engineering fields. It shares the same intervals as the Celsius scale but starts from absolute zero rather than the freezing point of water. The use of Kelvin ensures consistency and accuracy in scientific measurements and calculations.
3: How do I convert Fahrenheit to Celsius?
Answer: To convert Fahrenheit to Celsius, you can use the formula: °C = (°F – 32) × 5/9. Subtract 32 from the Fahrenheit temperature and then multiply the result by 5/9 to obtain the equivalent Celsius temperature.
4: How do I convert Celsius to Kelvin?
Answer: To convert Celsius to Kelvin, you can use the formula: K = °C + 273.15. Simply add 273.15 to the Celsius temperature to obtain the equivalent temperature in Kelvin.
5: What is absolute zero temperature?
Answer: Absolute zero is the lowest possible temperature, which is equivalent to 0 Kelvin (0 K) or approximately -273.15 degrees Celsius. At this temperature, the particles in a substance have the minimum possible kinetic energy.
6: How do you convert C(Celsius) to F(Fahrenheit) easily?
Answer: To convert Celsius (C) to Fahrenheit (F), you can use the following formula:
F = (C x 9/5) + 32.
Simply multiply the Celsius temperature by 9/5 and then add 32 to the result. This will give you the corresponding temperature in Fahrenheit.
7: What is 25 Celsius in Fahrenheit?
Answer: To convert 25 degrees Celsius to Fahrenheit, you can use the formula:
F = (C x 9/5) + 32.
Plugging in the value of 25 for C:
F = (25 x 9/5) + 32 F = 45 + 32 F = 77.
Therefore, 25 degrees Celsius is equal to 77 degrees Fahrenheit.
8: What temperature is a fever?
Answer: A fever is generally defined as an elevated body temperature above the normal range. The normal body temperature can vary slightly depending on the individual and the method of measurement but is typically around 98.6 degrees Fahrenheit or 37 degrees Celsius. A fever is commonly considered to be a body temperature of 100.4 degrees Fahrenheit (38 degrees Celsius) or higher. However, it is important to note that the specific threshold for a fever may vary depending on factors such as age, underlying health conditions, and individual circumstances.
