Convert coordinates from Jamaica 1875 / Jamaica (Old Grid) (EPSG:24100) to JAD69 / Jamaica National Grid (EPSG:24200) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 1 transformation between Jamaica 1875 / Jamaica (Old Grid) (EPSG:24100) and JAD69 / Jamaica National Grid (EPSG:24200). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| A0 | 82357.457 | metre |
| A1 | 0.304794369 | coefficient |
| A2 | 0.000015417425 | coefficient |
| B0 | 28091.324 | metre |
| B1 | -0.000015417425 | coefficient |
| B2 | 0.304794369 | coefficient |
Derived by least squares fit at primary triangulation stations. Accuracy will be less outside of this network due to extrapolation.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:24100", "EPSG:24200", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)projected system measured in linear units (typically metres) · Area of use: Jamaica - onshore
+proj=lcc +lat_1=18 +lat_0=18 +lon_0=-77 +k_0=1 +x_0=167638.49597 +y_0=121918.90616 +a=6378249.14480801 +b=6356514.96620413 +to_meter=0.3047972654 +no_defs +type=crsMore about EPSG:24100 →
projected system measured in linear units (typically metres) · Area of use: Jamaica - onshore
+proj=lcc +lat_1=18 +lat_0=18 +lon_0=-77 +k_0=1 +x_0=250000 +y_0=150000 +ellps=clrk66 +units=m +no_defs +type=crsMore about EPSG:24200 →