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Temperature Conversion
This tool calculates equivalent temperature values across several commonly used temperature scales. The Kelvin and Rankine scales are absolute versions of the Celsius and Fahrenheit scales, respectively, meaning that the zero points on these scales reflect a theoretical minimum temperature. In contrast, the zero points on the Celsius and Fahrenheit scales were originally based on observable physical phenomena, such as the freezing point of water.
Celsius:
Fahrenheit:
Kelvin:
Rankine:
* The temperature conversion calculates the temperature of absolute zero or above.
Absolute Zero
Celsius -273.15 °C
Fahrenheit -459.67 °F
Kelvin 0 K
Rankine 0 °R
Formulas for Converting Temperature Scales
Celsius to Fahrenheit Conversion
Celsius to Kelvin Conversion
Celsius to Rankine Conversion
Fahrenheit to Celsius Conversion
Fahrenheit to Kelvin Conversion
Fahrenheit to Rankine Conversion
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Temperature Conversion Explained
Measuring temperature isn’t as easy as most of us think it is, how do we know what 100°F and 100°C really are?
About 300 years ago, measuring temperature was difficult to say the least. People only knew that things were hot or cold, freezing or boiling. There were no standard scales or devices so temperatures could vary from one manufacturer to the next using whatever measurement process or scale they deemed fit.
Daniel Gabriel Fahrenheit changed all of that in 1724 when he created a sealed thermometer with his scale based on the freezing point of salted water and the human body temperature. This was divided into a range of 96 increments. Fahrenheit’s thermometers could also be manufactured with precision and reliability, something that hadn’t been available before thus increasing their popularity and acceptance.
In 1742 Anders Celsius created a scale with 100 increments based on the freezing and boiling point of water. This scale was originally referred to as “degrees centigrade” because of the 100 increments in its scale. The name of the scale was officially changed to “Celsius” in 1948 to avoid confusion of measurements in other languages. Interestingly, Anders original scale had the boiling point of water set at 0 and the freezing point set at 100. He continued to use this scale for the rest of his life. It wasn’t until years later that the scale was reversed, and the freezing point of water was set to 0 and the boiling point 100.
While these two methods of measurement have proved to be very beneficial since their inception, they are both some of the most misspelled terms used today. Luckily, whether you use “Farenheit” or “Celcius” we all know what you mean.
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