Fahrenheit Converter

The Fahrenheit scale puts water’s freezing point at 32 °F and boiling point at 212 °F. It is the everyday scale in the U.S. and a few other countries, especially for weather and ovens.

How to use the Fahrenheit Converter

1. Pick the unit you are starting from in the From menu and type your value.
2. Pick the unit you want in the To menu. The heading changes to match, for example “Degrees Fahrenheit to Degrees Celsius Converter”.
3. The most common temperature units are shown below at the same time, so you can compare them at a glance.
4. Type into any result to convert backwards, then use Copy results. The copied text starts with the heading for your chosen units.

Results update as you type. Everything is calculated in your browser.

How it works

Temperature scales differ in both the size of a degree and where zero sits, so each of the 8 units here is converted with a scale factor and an offset rather than a single multiplier. The calculator first turns the value you type into degrees Celsius, then into the unit you picked in the “To” menu and into kelvins and degrees Rankine. Typing into any result works backwards the same way, so every field always describes the same temperature.

How to convert temperature units

1. Choose the unit you have in the From menu and type the value.
2. Choose the unit you want in the To menu. The heading changes to match, for example “Degrees Fahrenheit to Degrees Celsius Converter”.
3. The calculator converts through the base scale using each unit’s scale factor and zero offset.

1 degree Fahrenheit in common units

Degrees Fahrenheit conversion table

Temperature units explained

Degree Fahrenheit (°F)

The Fahrenheit scale, proposed by Daniel Fahrenheit in 1724, puts water’s freezing point at 32 °F and boiling point at 212 °F. It is the everyday scale in the United States.

Degree Celsius (°C)

The Celsius scale sets 0 °C at the freezing point and 100 °C at the boiling point of water at sea level. Since 2019 it is defined from the kelvin: °C = K − 273.15.

Kelvin (K)

The kelvin is the SI unit of temperature. It starts at absolute zero, the coldest possible temperature, and has the same step size as the degree Celsius.

Common mistakes to avoid

Forgetting the offset (°F is not just °C × 1.8), converting temperature differences with the full formula (a change of 10 °C is a change of 18 °F, with no +32), and writing “degrees kelvin”.