Source: EPSG:4326 — WGS 84
geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)
+proj=longlat +datum=WGS84 +no_defs +type=crsMore about EPSG:4326 →
Convert EPSG:4326 to EPSG:6668
Online coordinate converter from WGS 84 (EPSG:4326) to JGD2011 (EPSG:6668). Enter your source coordinates and get the result instantly. All transformations happen in your browser — no data is sent to any server.
About converting WGS 84 to JGD2011
Converting from WGS 84 (EPSG:4326) to JGD2011 (EPSG:6668) is the standard datum shift for any post-2011 work in Japan. JGD2011 was introduced after the Tōhoku earthquake to account for crustal deformation up to 5 m in eastern Honshu — the previous JGD2000 datum was no longer adequate for that region.
The transformation is a Helmert seven-parameter shift; for survey-grade work in regions affected by post-earthquake deformation, GSI publishes grid files for higher precision. The matching projected CRSs are 19 prefectural Plane Rectangular zones (EPSG:6669-6687).
Why people convert EPSG:4326 to EPSG:6668
- Japanese national and prefectural mapping (GSI)
- Cadastre and Land Registry post-2011
- Surveying and GNSS positioning in Japan
Try it: Tokyo Skytree
Input (EPSG:4326): 139.8107, 35.7101
The EPSG dataset defines official transformation parameters for the reverse direction. See JGD2011 to WGS 84 — the parameters are invertible.
Convert EPSG:4326 to EPSG:6668 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4326", "EPSG:6668", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Target: EPSG:6668 — JGD2011
geographic system using latitude and longitude on an ellipsoid · Area of use: Japan
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crsMore about EPSG:6668 →
Frequently asked questions
- Should I use EPSG:6668 (JGD2011) or EPSG:4612 (JGD2000)?
- Use JGD2011 for any current work. JGD2000 remains for legacy datasets; in regions affected by the 2011 earthquake the difference can be metres.
- How accurate is converting WGS 84 to JGD2011?
- Projection-only conversions are accurate to floating-point precision. If a datum shift is involved, browser-based tools use Helmert parameters which are accurate to roughly 1-5 m; for surveying-grade work apply the official grid-shift transformation in a desktop GIS.
- Does my data leave the browser when I use this converter?
- No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.