---
title: "mercatorToTileIndex | 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 mercatorToTileIndex

-   mercatorToTileIndex(  
        position: [Position](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Position/),  
        zoom: number,  
        strict?: boolean,  
    ): [Position](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Position/)[](#mercatortotileindex)
    
    From a given mercator coordinate and a zoom level, computes the tile index
    
    #### Parameters
    
    -   position: [Position](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Position/)
        
        Mercator coordinates (north-west is \[0, 0\], sourth-east is \[1, 1\])
        
    -   zoom: number
        
        Zoom level
        
    -   `Optional`strict: boolean
        
        Returns integer tile indices if `true` or floating-point values if `false`
        
    
    #### Returns [Position](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Position/)