# Formula Overview

## Content

Formulas in SpreadJS include operators and functions that follow certain syntax rules and allow you to perform a range of calculations. These topics introduce the concepts you need to make full use of the built-in functions and extensive capability of formulas:

* [What is a Formula](/spreadjs/docs/v16/formulareference/formulaoverview/whatisaformula)
* [Cell References in a Formula](/spreadjs/docs/v16/formulareference/formulaoverview/cellreferences)
* [Sheet References in a Formula](/spreadjs/docs/v16/formulareference/formulaoverview/SheetRefFormula)
* [Operators in a Formula](/spreadjs/docs/v16/formulareference/formulaoverview/operatorsinaformula)
* [Wildcard Characters in a Formula](/spreadjs/docs/v16/formulareference/formulaoverview/wildcard)
* [Functions in a Formula](/spreadjs/docs/v16/formulareference/formulaoverview/functionsformula)
* [Arrays in a Formula](/spreadjs/docs/v16/formulareference/formulaoverview/arrayform)
* [Dynamic Arrays in a Formula](/spreadjs/docs/v16/formulareference/formulaoverview/dynamic-arrays-in-formula)
* [Create Custom Formulas](/spreadjs/docs/v16/features/formulas/formulascustom)
* [Resultant Error Values](/spreadjs/docs/v16/formulareference/formulaoverview/resulterror)
* [Iterative Calculation](/spreadjs/docs/v16/formulareference/formulaoverview/calculating-iterative)