LDP Coordinate Converter , Phisan.Chula@gmail.com

Convert WGS84 latitude/longitude, UTM Zone 47/48N, and editable LDP Transverse Mercator coordinates.

PROJ-style JavaScript converter · proj4js

Input

Paste points: WGS84, UTM, or LDP

Accepted formats: P0 lon lat, P0 lat lon, RTK1 48 E N, RTK1 UTM48 E N, BLDG1 LDP E N. Comments after # are ignored. Commas in numbers are OK.

Default UTM zone for ambiguous UTM

UTM hemisphere

Detection rule: if the second token is LDP, the row is LDP. If it is 47, 48, UTM47, or UTM48, the row is UTM. Numeric thousands commas such as 278,234.264 are preserved as one number; commas between fields are still accepted. Otherwise two numeric values are treated as WGS84 and the app detects lon/lat vs lat/lon by value range.

Editable LDP Definition

LDP PROJ string

Edit central meridian, scale factor, false easting/northing, or ellipsoid. Press convert again after editing.

Ready. Paste coordinates and press convert.

LDP sketch

"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

Result Table

Total rows0

Converted0

Errors / Warnings0

No.	Point	Input	Longitude	Latitude	UTM Zone	UTM_E	UTM_N	LDP_E	LDP_N	Status