JavaScript library to transform coordinates from one coordinate system to another, including datum transformations

Provider for Chinese Tms Service

QGIS tools to capture and zoom to coordinates using decimal, DMS, WKT, GeoJSON, MGRS, UTM, UPS, GEOREF, ECEF, H3, and Plus Codes notation. Provides external map support, MGRS & Plus Codes conversion and point digitizing tools.

A zero-dependency Go package for coordinate transformations.

PHPCoord is a PHP library to aid in handling coordinates. It can convert coordinates for a point from one system to another and also calculate distance between points

A JavaScript port of the Proj.4 map projection library.

OGC/GIS functions and extensions for Dremio

A machine-readable index of all EPSG coordinate systems.

Transform coordinates from one coordinate system to another.

Geometric conversions between different formats and projections

A GIS READ WRITE GRASSHOPPER PLUGIN

Website to guess the projection for a given point.

node.js module for converting .prj files and projcs / geogcs strings to EPSG codes

Custom projection (LV95) example for Leaflet

Simple web app to show geo coordinates in two different coordinate reference systems

You woke up in the morning and forgot about the correct spatial reference (EPSG) of a bunch of points. This tool is your amnesia remedy and searches at spatialreference.org for you.

Get EPSG code given a set of lat/lng coordinates

Alfred Workflow for finding EPSG or name of the Coordinate Systems through epsg.io

A simple helper for re-projecting geojson with Proj4