Convert units of temperature between **Celsius**, **Fahrenheit**, **kelvin **and many other historical temperature scales, with Alcula’s handy temperature conversion tool.

## How to convert between temperature scales

The latest addition to alcula.com’s online conversion tools supports Fahrenheit. Celsius, kelvin, **Rankine**, **Delisle**, **Newton**, **Réaumur **and **Rømer**.

You can access the temperature converter from the navigation at the top of the page clicking Conversions/Temperature.

### Selecting the temperature units

The entry page displays the unit selection menu. Use the drop-down lists to select the scale you want to convert from and the scale that you want to convert to. Press the “Convert …” button to go to the required conversion page.

### Performing the conversion

The image below shows the Fahrenheit to Celsius conversion page:

To convert a temperature expressed in Fahrenheit to it’s Celsius equivalent, click on the top field, labeled “Fahrenheit” and enter the value. Then click on “Convert”. The corresponding value in Celsius is calculated and displayed in the bottom field.

The same page can also convert back from Celsius to Fahrenheit: simply enter the value in Celsius in the bottom field and click on “Convert”.

## Conversion Formulas

The temperature conversion tool also shows the formulae that it uses to perform each conversion. Scroll down the conversion page until you find the “xxx to xxx Conversion Formula” heading. Here is an example for Fahrenheit to Delisle:

The formula shows that to oonvert a temperature value expressed in degrees Fahrenheit to it’s equivalent in Delisle, you subtract the Fahrenheit (T_{fahrenheit}) value from 212 and multiply the result by the fraction 5/6. The result is the temperature in Delisle (T_{delisle}). This is the formula used by the converter.

## The temperature conversion pages

- Main temperature conversion page This is the page where you can select the units to convert.

For your convenience, here is a list of direct links to the individual unit conversion pages. Scroll down until you find the required conversion and click on the relative link.

### Conversions from Fahrenheit

- Fahrenheit to Celsius
- Fahrenheit to kelvin
- Fahrenheit to Rankine
- Fahrenheit to Delisle
- Fahrenheit to Newton
- Fahrenheit to Réaumur
- Fahrenheit to Rømer

### Conversions from Celsius

- Celsius to Fahrenheit
- Celsius to kelvin
- Celsius to Rankine
- Celsius to Delisle
- Celsius to Newton
- Celsius to Réaumur
- Celsius to Rømer

### Conversions from kelvin

- Kelvin to Fahrenheit
- Kelvin to Celsius
- Kelvin to Rankine
- Kelvin to Delisle
- Kelvin to Newton
- Kelvin to Réaumur
- Kelvin to Rømer

### Conversions from Rankine

- Rankine to Fahrenheit
- Rankine to Celsius
- Rankine to kelvin
- Rankine to Delisle
- Rankine to Newton
- Rankine to Réaumur
- Rankine to Rømer

### Conversions from Delisle

- Delisle to Fahrenheit
- Delisle to Celsius
- Delisle to kelvin
- Delisle to Rankine
- Delisle to Newton
- Delisle to Réaumur
- Delisle to Rømer

### Conversions from Newton

- Newton to Fahrenheit
- Newton to Celsius
- Newton to kelvin
- Newton to Rankine
- Newton to Delisle
- Newton to Réaumur
- Newton to Rømer

### Conversions from Réaumur

- Réaumur to Fahrenheit
- Réaumur to Celsius
- Réaumur to kelvin
- Réaumur to Rankine
- Réaumur to Delisle
- Réaumur to Newton
- Réaumur to Rømer

### Conversions from Rømer

- Rømer to Fahrenheit
- Rømer to Celsius
- Rømer to kelvin
- Rømer to Rankine
- Rømer to Delisle
- Rømer to Newton
- Rømer to Réaumur

Tags: celsius, conversion, Delisle, fahrenheit, kelvin, Newton, online temperature calculator, online temperature conversion, Rankine, Réaumur, Rømer, temperature, temperature conversion, temperature converter, temperature scale, thermometric scale