title: Basic to advance use of formulas
keywords: Jexcel, javascript, excel-like, spreadsheet, formulas, currency, calculations
description: Unleash the power of your tables bringing formulas and custom javascript methods on your Jspreadsheet - the online spreadsheet.
[Back to Examples](/jspreadsheet/v3/examples "Back to the examples section")
# Adding formulas on your online spreadsheet
## Simple spreadsheet-like formula usage
The example below shows how to use spreadsheet like formulas on your javascript table spreadsheet.
```html
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## Creating Custom formulas
You can declare custom javascript methods and use in your tables as the example below.
```html
```