Fahrenheit to Celsius Converter (°F <-> °C)

A simple app designed to be a quick calculator if you wish to convert Celsius (°C) to Fahrenheit (°F) or Fahrenheit to Celsius.

Fahrenheit scale is used in the following countries:

- United States

- Marshall Islands

- Bahamas

- Belize

- Cayman Islands

- Federated States of Micronesia

The Celsius scale is used in all the other countries

How to convert Fahrenheit to Celsius:

The temperature T in degrees Celsius (°C) is equal to the temperature T in degrees Fahrenheit (°F) minus 32, times 5/9:

T(°C) = (T(°F) - 32) × 5/9

How to convert Celsius to Fahrenheit:

The temperature T in degrees Fahrenheit (°F) is equal to the temperature T in degrees Celsius (°C) times 9/5 plus 32:

T(°F) = T(°C) × 9/5 + 32

The history of Fahrenheit:

The Fahrenheit scale is a temperature scale based on one proposed in 1724 by Dutch–German–Polish physicist Daniel Gabriel Fahrenheit (1686–1736). It uses the degree Fahrenheit (symbol: °F) as the unit. Several accounts of how he originally defined his scale exist. The lower defining point, 0 °F, was established as the temperature of a solution of brine made from equal parts of ice, water and salt (ammonium chloride). Further limits were established as the melting point of ice (32 °F) and his best estimate of the average human body temperature (96 °F, about 2.6 °F less than the modern value due to a later redefinition of the scale). The scale is now usually defined by two fixed points: the temperature at which water freezes into ice is defined as 32 °F, and the boiling point of water is defined to be 212 °F, a 180 °F separation, as defined at sea level and standard atmospheric pressure.

Source: https://en.wikipedia.org/wiki/Fahrenheit

The history of Celsius:

The Celsius scale, previously known as the centigrade scale is a temperature scale used by the International System of Units (SI). As an SI derived unit, it is used by all countries except the United States, the Bahamas, Belize, the Cayman Islands and Liberia. It is named after the Swedish astronomer Anders Celsius (1701–1744), who developed a similar temperature scale. The degree Celsius (°C) can refer to a specific temperature on the Celsius scale or a unit to indicate a difference between two temperatures or uncertainty. Before being renamed to honour Anders Celsius in 1948, the unit was called centigrade, from the Latin centum, which means 100, and gradus, which means steps.

Source: https://en.wikipedia.org/wiki/Celsius