Amersfoort / RD New to WGS84 (ETRS89) 変換ツール

Technical Summary: Convert Dutch RD New coordinates (Bessel 1841) to WGS84 / ETRS89 using EPSG:9282 RDNAPTRANS compliance frameworks.

Interactive Transformation Tool

Input Local coordinates (Latitude / Longitude) to mathematically derive WGS84 outputs using EPSG:28992 & EPSG:4830 Helmert approximations.

Latitude:

Longitude:

WGS84 Latitude: -
WGS84 Longitude: -

実務リスク警告

誤った測地系（データム）の指定や、グリッド・地上補正（Grid-to-Ground）を適用しない座標変換は、1〜400mの位置ズレを引き起こします。これは測量過失請求や施工紛争の代表的な原因です。

技術事例・判例を見る契約上の測地系リスクリスク試算シミュレーター

Geodetic Shift Tolerances

Using outdated Amersfoort approximations instead of the official RDNAPTRANS grids produces decimeter-level discrepancies, strictly violating Kadaster requirements.

Civil & Legal Implications

In the Netherlands, all engineering and flood management is legally referenced to RD New / NAP. Using non-conforming, generic WGS84 shifts undermines the legal defensibility of water-management deliverables.

Real-World Infrastructure Risk

A 0.25m vertical or horizontal datum discrepancy in coastal sea-defense heights or levee structures due to a bad coordinate transformation is a severe civil risk.

Verify Global Datums

Always validate your site data before mobilizing construction or legal teams. Use our core converters to rule out fundamental geodetic errors:

Authority よくあるご質問 (FAQ)

Why do I need a specific transformation for the Netherlands?

The Netherlands Partnership of Kadaster (NSGI) mandates the use of RDNAPTRANS2018. Standard GPS (WGS84) natively plotted into a Dutch mapping system without this rigorous transformation will cause alignment failures in critical water infrastructure.