Fahrenheit (°F) is a temperature scale mainly used in the United States and, in limited cases, a few other places. It was developed in the early 18th century by the German physicist Daniel Gabriel Fahrenheit.
The scale is defined using the freezing and boiling points of water at standard atmospheric pressure. Water freezes at 32°F and boils at 212°F, creating a span of 180 degrees between these two reference points.
Because the Fahrenheit scale has smaller degree increments than Celsius, it can provide more precise whole-number temperature readings. This is often considered useful when describing weather conditions or indoor temperatures. However, its perceived intuitiveness largely depends on familiarity.
Today, Fahrenheit is rarely used internationally, as most countries have adopted the Celsius (°C) scale as the standard.