Skip to content
coordlab.app
EN
  1. Home
  2. GDM2000 (Rev 2006) / Cassini

GDM2000 (Rev 2006) / Cassini

Choose the state grid, then enter Northing and Easting in metres.

Read as: GDM2000 (Rev 2006) / Cassini Kedah & Perlis
  • Decimal degreesWGS 84 6.139719, 100.385160
  • Degrees, minutes, secondsWGS 84 6°08′22.99″N 100°23′06.58″E
  • Degrees, decimal minutesWGS 84 6°08.3831′N 100°23.1096′E
  • UTMWGS 84 47N 653270 678848
  • MGRS / USNGWGS 84 47N PG 53270 78847
  • GDM2000 (Rev 2006) / CassiniN, E · EPSG:25311 19364.32 -27805.41
  • GDM2000 / RSON, E · EPSG:3375 679690.91 266843.90
  • Plus CodeOpen Location Code 6PR249QP+V3
  • Geohash w1p6umdnr
  • Maidenheadham radio OJ06ed

Tap the map to convert that point.

A separate Cassini origin for each state grid

The geocentric Cassini-Soldner grids offered here use GDM2000 (Rev 2006). There are nine choices, including shared grids for Kedah and Perlis and for Negeri Sembilan and Melaka. The same number pair can describe different places under different state origins, so confirm the state explicitly.

The JUPEM Kedah/Perlis example is N = 19364.3195 m, E = −27805.4063 m. Negative eastings are valid west of that grid’s origin; do not discard the sign. This revision uses EPSG:25311 for Kedah/Perlis.

Datum revision matters

A label such as Cassini, GDM2000, GDM2000 Rev 2006 or GDM2020 is not interchangeable. This page uses the 2006 revision and does not apply a deformation model to bring coordinates to another revision or epoch.

The Kedah/Perlis projection example from JUPEM agrees within 1 mm. That validates the published example, not an official control set in every state. The WGS84 approximation is rated at 1 m by EPSG:12288.

Preparing a spreadsheet

Keep Northing and Easting in separate columns and record the state grid and revision with the file. Choose the same system for the batch converter. Source: JUPEM coordinate reference system guidelines.

Frequently asked questions

Can I convert an old local Cassini survey here?

Only if its datum is GDM2000 (Rev 2006) and its origin matches an offered state grid. Older local Cassini surveys need their own datum transformation.

More tools

Coordinate converterAny format to all the others, with a map. UTM zone finderZone, band and central meridian of any point. Batch coordinate converterA whole spreadsheet at once, with KML and GPX. Distance between two coordinatesDistance, bearing and midpoint on the ellipsoid. Area from coordinatesArea in acres and hectares from the corners. Sunrise, sunset and twilightSunrise, sunset, twilight and a monthly daylight table. Hiking time calculatorWalking time from distance, elevation gain and a GPX track.