There are two types of Formulas in WeWeb:

- the formulas you create, and
- no-code formulas we provide out of the box.

## Formulas You Create

If you go to "Data" > "Formulas", you will see you can create and organize formulas in the same way you might write functions if you were coding an app.

In the example below, we created a formula to convert numbers using a Javascript custom code:

We can then reuse it throughout our project, keeping in mind that it needs a number parameter:

## Out-of-the-Box No-code Formulas

There are *many* no-code formulas available out-of-the-box, including but not limited to formulas to:

- format a text (uppercase, capitalize)
- convert a variable (toText, toNumber),
- return true or false if a variable is empty (ifEmpty),
- find items in a list that match a value (filterByKey),
- make calculations (sum, average, round, rollupSum),
- create an array or object (createArray, createObject), and
- find items in list B based on a value in list A (lookupArray).

Whenever you bind an item, you can find WeWeb's no-code formulas in the Formula tab:

These formulas are ordered by category:

- conditional,
- math,
- array,
- text,
- object,
- date,
- file, and
- utilities.

Note that you can also find:

- all the formulas you created in the "Custom" category, and
- common operators in the "Operators" category.

#### 🔥 Pro Tip 🔥

You can learn more about every no-code formula in the WeWeb editor when you hover over the formula name in the formula tab or the formula input field.

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Last modified on

April 6, 2022

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