Temperature Converter

How to use the converter

To convert celsius to fahrenheit enter the value in the field below and select the target unit, the value will be displayed as follows:

Decimal places:


Conversion tables

Celsius (°C)
Fahrenheit (°F)
Kelvin (K)
Rankine (°Ra)
Réaumur (°Ré)

What is Temperature?

For meteorology, science, the study of climate change and ecosystems and, in general, for everyday life, it is important to know the temperature. Temperature is the quantity responsible for measuring the level of agitation of the molecules of a studied body.

It is also considered an important meteorological variable and that is why we are going to highlight all the characteristics of temperature. What do you need to know about temperature?

How to measure temperature?

To measure temperature, we must bear in mind the phenomena that occur with matter when it undergoes changes caused by the environment in which it is inserted. Until recently, temperature was measured with mercury thermometers, based on the expansion of metallic mercury with increasing temperature. In this way, on a scale of degrees Celsius, we can know how many degrees of temperature we are or is a material.

Other ways of measuring temperature based on the properties of matter are to analyze the electrical resistance of certain materials, the volume of a body, the color of an object, etc.

Maximum and minimum temperatures in meteorology

In meteorology, the terms maximum and minimum temperature are used to indicate the most extreme values ​​(lowest and highest) recorded in a given period of time. With these measurements, temperature records are created that are used to measure the climate characteristics of a region. That's why when we talk about meteorologist we are talking about meteorology and when we talk about temperatures and global warming we are talking about climate.

To measure these extreme temperatures, maximum and minimum thermometers are used.

The maximum thermometer consists of a common thermometer, whose tube has a choke inside near the reservoir: when the temperature increases, the expansion of mercury in the reservoir pushes with enough force to overcome the resistance offered by the choke. On the other hand, when the temperature drops and the mass of mercury contracts, the column breaks, leaving its free end in the most forward position it occupied during the entire interval.

The minimum thermometer is alcohol and has an enamel index immersed in the liquid inside. When the temperature rises, the alcohol passes between the walls of the tube and the index finger, and does not move; On the other hand, when the temperature decreases, the alcohol boosts the referred index in its recoil movement, as it encounters a very large resistance at the exit of the liquid. The index position therefore indicates the lowest temperature reached.

What are thermometric scales?

Thermometric scales indicate the temperature according to certain pre-established values. Temperature is measured using instruments based on some property of the substance that varies with temperature. These instruments are calibrated to the generally accepted temperature scale.

When designing a specific temperature scale, difficulties arise because the properties of each substance vary within the same temperature range differently.

The design of many thermometers, for example, is based on the phenomenon of liquid expansion with increasing temperature. Those of this type include liquid thermometers (mercury or alcohol), in which the length of the liquid column increases with increasing temperature.

A liquid has different variations in its coefficient of thermal expansion depending on the temperature to which it is subjected, making it difficult to establish a temperature scale.

In what units do we measure temperature?

For almost all physical quantities, there are different units of measurement, depending on the scale on which you want to measure. Temperature is no exception, here are some temperature measurement units:

Celsius thermometer scale (centigrade)

Named after the Swedish scientist Anders Celsius (1701-1744), this scale has become an international standard. The scale is "centesimal", that is, it is divided into 100 equal parts, each of which is called a "degree Celsius", whose symbol is ° C. The value 0 is conventionally assigned to the temperature of melting ice and in o value 100 in boiling water temperature.

Fahrenheit thermometer scale

This scale owes its name to the scientist Daniel Gabriel Fahrenheit (1686-1736). It is now mostly used in the US and UK (but not officially). The scale is divided into 180 equal parts, each called a degree Fahrenheit, whose symbol is º F. The value 32 is assigned to the temperature of ice and the value 212 to the temperature of boiling water, both to atmospheric pressure at sea level.< /p>

Reaumur thermometer

This scale was invented by the French scientist René-Antoine Ferchault de Réaumur (1683-1757). It is divided into 80 equal parts, each called a degree Réaumur, whose symbol is ºR. The value 0 is responsible for melting the ice and the value 80 at the boiling temperature of water, both at sea atmospheric pressure

Absolute thermometric scale (Kelvin)

Developed by the British scientist Lord Kelvin (1824-1907), a pioneer in thermodynamics, this scale uses Kelvin. Zero Kelvin, also called "absolute zero", represents the lowest possible temperature according to thermodynamic theory. This is the scale most used by scientists. It is a scale that does not have negative temperature values ​​and its zero is in the state in which the particles that make up a material do not move. The boiling point of water is 373 K and the freezing point is 273 K.

Links to other conversions involving temperature units