GeoJSON to OSM Converter

GeoJSON to OSM Converter | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Format Conversion
Input types: textarea, number, checkbox
Output type: text
Sample coverage: 4
API ready: Yes

Overview

The GeoJSON to OSM Converter is a specialized utility designed to transform geographic data from GeoJSON format into the OpenStreetMap (OSM) XML schema, enabling seamless integration of custom spatial features into mapping projects.

When to use

When you need to import custom geographic shapes or points into OpenStreetMap editors like JOSM.
When migrating spatial data from web-based GIS applications to desktop mapping environments.
When preparing custom vector layers for offline map rendering or specialized OSM-based analysis.

How it works

1Paste your GeoJSON data into the input field.
2Define custom starting IDs for nodes and ways to prevent conflicts with existing map data.
3Toggle the 'Pretty Print' option to ensure the resulting XML is clean and human-readable.
4Click the convert button to generate your OSM XML file for immediate download or use.

Use cases

Converting custom building footprints from municipal GIS data into OSM format.
Transforming GPS-tracked paths into OSM ways for map contribution.
Standardizing proprietary spatial data for use in open-source mapping projects.

Examples

1. Importing Custom Building Footprints

GIS Technician

Background

A technician has a set of building footprints in GeoJSON format that need to be uploaded to an OpenStreetMap local instance.

Problem

The data is in the wrong format for the OSM editor and lacks the required XML structure.

How to use

Paste the GeoJSON into the input area and set the Way Start ID to -1000 to avoid conflicts.

nodeStartId: -1, wayStartId: -1000, prettyPrint: true

Outcome

A clean OSM XML file ready to be imported into JOSM for final verification and upload.

FAQ

What is the difference between GeoJSON and OSM XML?

GeoJSON is a lightweight format for encoding geographic data structures, while OSM XML is a specific schema used by OpenStreetMap to represent nodes, ways, and relations.

Why should I set custom Node and Way IDs?

Setting unique negative IDs helps prevent ID collisions when merging your converted data into an existing OSM dataset.

Does this tool support complex relations?

The tool primarily maps standard GeoJSON geometries to OSM nodes and ways; complex relations may require manual adjustment in an OSM editor.

Can I use this for large datasets?

Yes, but for extremely large files, ensure your browser has sufficient memory to process the XML transformation.

Is the output compatible with JOSM?

Yes, the generated OSM XML follows standard formatting compatible with JOSM and other OpenStreetMap-compliant software.

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Importing Custom Building Footprints

FAQ

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