HP Calculator Programs

Compute azimuth (or bearing) and distance between two coordinate pairs.

Compute traverse closure, area, and adjusted coordinates for a closed traverse.

Solve any triangle given three known elements (SSS, SAS, ASA, AAS, SSA).

Solve a simple circular curve given any two known elements (R, D, T, L, LC, E, M, Delta).

Compute elevations on a parabolic vertical curve at any station.

Compute area of a closed polygon using the coordinate (cross-multiply) method.

Convert between slope distance, horizontal distance, vertical distance, slope ratio, and grade percentage.

Compute elevation difference using zenith angle and slope distance, with optional curvature and refraction correction.

Single and double proportion for restoring lost PLSS corners per BLM Manual of Surveying Instructions.

Convert between US Survey Feet, International Feet, meters, chains, links, rods, and varas.

Determine your position from angles to three known points (Tienstra method).

Convert an azimuth (0–360°) to bearing angle and quadrant code (NE/SE/SW/NW).

Convert a bearing angle (0–90°) plus quadrant code (1–4) to an azimuth.

Add or subtract two angles in D.MMSS format and return the result in D.MMSS.

Given two known grade tangents, compute the PVI station and elevation.

Compute the intersection of two lines defined by point + azimuth each.