If you’re visiting from outside the U.S., you probably use Celsius, not Fahrenheit. To make things simple, I created this handy converter.

Use the tool below to quickly switch between Fahrenheit and Celsius.

What are the 4 Types of Temperature?

Celsius (°C)

The most widely used temperature scale worldwide, adopted by nearly every country except the United States and a few small nations. Water freezes at 0°C and boils at 100°C. Celsius is also known as centigrade.

Fahrenheit (°F)

Commonly used in the United States, the Cayman Islands, the Bahamas, Belize, and Palau. In this scale, water freezes at 32°F and boils at 212°F. It remains the standard for U.S. weather forecasts, cooking, and daily life.

Kelvin (K)

The scientific standard for measuring temperature in physics and chemistry. The Kelvin scale starts at absolute zero (0 K), the coldest possible temperature. Water freezes at 273 K and boils at 373 K. Unlike Celsius and Fahrenheit, Kelvin does not use the degree symbol (°).

Rankine (°R)

Less commonly used, but important in engineering and thermodynamics, especially in the United States. Rankine is based on Fahrenheit degrees but, like Kelvin, starts at absolute zero. Water freezes at 491.67°R and boils at 671.67°R.

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