🌡️ Instantly convert Celsius, Fahrenheit, and Kelvin in just one click! Our tool ensures accuracy and ease of use for students, scientists, and curious minds alike.
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See on AmazonTemperature units have been developed over time to meet scientific and practical needs. Here is an overview of the main temperature units :
Introduced in 1742 by Anders Celsius, the Celsius scale is based on the physical properties of water, where 0°C corresponds to the freezing point of water and 100°C to the boiling point of water.
Developed by Daniel Gabriel Fahrenheit in 1724, this scale was widely used in Europe and North America. In this scale, 32°F corresponds to the freezing point of water, and 212°F to its boiling point.
Proposed by Lord Kelvin in 1848, the Kelvin scale is used in physics and thermodynamics. It starts at 0 K, known as absolute zero, the point where thermal energy ceases to exist.
In cooking, temperatures are often measured in Fahrenheit in countries like the US. Adjusting recipes based on the correct unit is essential for cooking accuracy.
Understanding temperature units when traveling internationally helps you interpret weather forecasts and plan your trip effectively.
The Kelvin scale is used in scientific fields where absolute temperature measurements are crucial, such as thermodynamics and physics.
| Celsius (°C) | Fahrenheit (°F) | Kelvin (K) |
|---|---|---|
| 1°C | 33.8°F | 274.15K |
| 10°C | 50°F | 283.15K |
| 100°C | 212°F | 373.15K |
| From | To | Formula |
|---|---|---|
| Celsius | Fahrenheit | (°C × 9/5) + 32 |
| Celsius | Kelvin | °C + 273.15 |
| Fahrenheit | Celsius | (°F - 32) × 5/9 |
| Fahrenheit | Kelvin | (°F - 32) × 5/9 + 273.15 |
| Kelvin | Celsius | K - 273.15 |
| Kelvin | Fahrenheit | (K - 273.15) × 9/5 + 32 |
Here are the extreme temperature records observed around the world, along with the locations where these temperatures were recorded.
56.7°C (134.1°F) was recorded at Furnace Creek Ranch, in Death Valley, California, USA, in July 1913.
-89.2°C (-128.6°F) was recorded at the Soviet Vostok Station in Antarctica in 1983.
Temperatures in space vary significantly depending on the object or region observed. Here are some examples of extreme temperatures in the universe.
The temperature of the Sun's surface reaches about 5,500°C, while its core can exceed 15 million°C.
In interstellar space, temperatures can drop as low as -270°C, just a few degrees above absolute zero.
Temperature influences many physical phenomena. Discover how it affects pressure, density, phase changes, and much more.
Temperature influences the pressure of gases. For example, a heated gas increases its pressure at constant volume.
A hot gas is less dense than a cold gas, which is why warm air rises in the atmosphere.
Temperature determines the state of a material: solid, liquid, or gas. Ice melts at 0°C, while water boils at 100°C.
The electrical conductivity of a material depends on its temperature. For example, a hot conductor becomes more resistant.
There are several temperature measurement units that are either obsolete or rarely used today. Discover some interesting examples below:
The Rankine temperature is primarily used in English thermodynamic systems. It is similar to Kelvin but starts at 0 °R, which corresponds to the complete absence of thermal energy.
Developed by René Antoine Ferchault de Réaumur in the 18th century, the Réaumur scale is mainly used in cooking and sugar production. Water freezes at 0 °Re and boils at 80 °Re.
Proposed by Isaac Newton, this scale is used to measure temperature differences in a scientific context. For example, water freezes at 0 °N and boils at 33 °N.