Amersfoort / RD New to WGS84 (ETRS89) Converter

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.



WGS84 Latitude: -
WGS84 Longitude: -
Professional Risk Notice

Using the wrong datum or applying coordinates without grid-to-ground correction can cause 1-400 metre positional errors —a leading cause of surveying negligence claims and contract disputes.

See Legal Cases ($25K—10M) Contract Datum Risk Calculate My Exposure

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Using outdated Amersfoort approximations instead of the official RDNAPTRANS grids produces decimeter-level discrepancies, strictly violating Kadaster requirements.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

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.

重要:計算結果の正確性を確認してください

座標精度はデバイスや測地系によって異なります。以下の確認を行わずに実務で使用しないでください:

GPS精度の警告

スマホのGPSは最大30メートルずれることがあります。これが原因でデータに重大なエラーが発生します。

精度を今すぐチェック →

測地系のリスク

誤った測地系(例:WGS84と日本測地系)を使用すると、常に数百メートルのズレが生じます。

測地系を確認する →