AV-G05
CRS Transformer
Reproject coordinates between common EPSG systems or your own proj4/WKT definitions with proj4js, offline.
● Runs on your device; nothing is uploadedHow to use it
- Enter an EPSG code under From and To, or type custom and paste a definition
- Tick the lat, lon option if your geographic data is latitude first
- Type a single point or paste one point per line into Batch
- Click Swap systems to reverse, or Download CSV for the batch
Limits
- Batch lines
- 100,000
- Custom definition
- 20,000 characters
- Built-in systems
- 167 EPSG codes, no online lookup
- Custom formats
- proj4 strings or WKT; +init= not supported
Features
- UTM zones for WGS 84 (north and south), NAD83 and ETRS89
- National grids such as British National Grid, Lambert-93 and Conus Albers
- Custom proj4 strings or WKT (PROJCS, GEOGCS, PROJCRS and more)
- Runs offline with proj4js
- Batch ignores extra columns and lists skipped lines
For AI agents: avtools_crs_transformer
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