EPSG Projection Converter

Convert coordinates between any EPSG coordinate reference system online. Supports EPSG:4326, EPSG:3857, national grids and custom Proj4 or WKT-1 definitions.

Convert Coordinates Online

Enter source and target EPSG codes, paste your coordinates and get the transformed result instantly.

Supported Coordinate Systems

EPSG:4326 (WGS 84)
EPSG:3857 (Web Mercator)
UTM zones
National CRS codes
Custom Proj4 definitions
WKT-1 projection definitions

Example

Source: EPSG:4326  →  28.9784, 41.0082
Target: EPSG:3857  →  3220985.2, 5049499.6

How to Use the EPSG Projection Converter

Enter the source EPSG code (e.g. 4326 for WGS 84).
Enter the target EPSG code (e.g. 3857 for Web Mercator).
Paste your coordinate pair in the input field (longitude latitude or easting northing).
The converted coordinate appears instantly in the output field.
Click Copy to copy the result to your clipboard.

EPSG Projection Converter – Frequently Asked Questions

What is an EPSG code?

EPSG (European Petroleum Survey Group) codes are numeric identifiers for coordinate reference systems (CRS) and related transformations. For example, EPSG:4326 is WGS 84 and EPSG:3857 is Web Mercator.

What is EPSG:4326 (WGS 84)?

EPSG:4326 is the WGS 84 geographic coordinate system using decimal degrees. Coordinates are expressed as longitude and latitude and are used by GPS systems and GeoJSON.

What is the difference between EPSG:4326 and EPSG:3857?

EPSG:4326 uses degrees (geographic) while EPSG:3857 (Web Mercator) uses meters (projected). Web Mercator is used by most online map tiles including Google Maps and OpenStreetMap.

Can I use a custom Proj4 definition?

Yes — paste any valid Proj4 string as the source or target CRS instead of an EPSG code.

How many EPSG codes are supported?

WPS Studio includes 160+ pre-registered EPSG codes covering all common UTM zones, national grids and global CRS.