Free Web Tool · NAMRIA / PRS92

PRS92 ↔ WGS84

Bursa-Wolf 7-parameter transformation between PRS92 (Clarke 1866) and WGS84/ITRF — useful for legacy-vs-modern survey reconciliation in the Philippines. Inputs are geodetic (φ, λ, h).

Input

Results

Source ECEF X
Source ECEF Y
Source ECEF Z
Target ECEF X
Target ECEF Y
Target ECEF Z
Target φ (DD)
Target λ (DD)
Target h (m)
Method

Bursa-Wolf 7-parameter: [Xt; Yt; Zt] = [ΔX; ΔY; ΔZ] + (1+s·1e−6)·R(rx,ry,rz)·[Xs; Ys; Zs]. R is the small-angle rotation matrix in radians (after converting arcsec to radians). Default parameters are NAMRIA-published PRS92 (Clarke 1866) ↔ ITRF94/WGS84. Verify the published values for your AOI.