---
title: "transform | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Function transform

-   transform(  
        positions: [Position](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Position/) | [Position](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Position/)\[\],  
        options?: [CoordinatesTransformOptions](https://docs.maptiler.com/sdk-js/api-reference/types/CoordinatesTransformOptions/),  
    ): Promise<[CoordinateTransformResult](https://docs.maptiler.com/sdk-js/api-reference/types/CoordinateTransformResult/)\>[](#transform)
    
    Transforms coordinates from a source reference system to a target reference system using MapTiler API. Learn more on the MapTiler API reference page: [https://docs.maptiler.com/cloud/api/coordinates/#transform-coordinates](https://docs.maptiler.com/cloud/api/coordinates/#transform-coordinates)
    
    #### Parameters
    
    -   positions: [Position](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Position/) | [Position](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Position/)\[\]
    -   `Optional`options: [CoordinatesTransformOptions](https://docs.maptiler.com/sdk-js/api-reference/types/CoordinatesTransformOptions/)
    
    #### Returns Promise<[CoordinateTransformResult](https://docs.maptiler.com/sdk-js/api-reference/types/CoordinateTransformResult/)\>