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.