Geoclass is a professional surveying calculator built for engineers (mining civil and environmental) surveyors and GIS technicians. It combines coordinate geometry (COGO) UTM map coordinate conversion for 592 systems across 55 countries slope calculations and area calculation all in a single app.

15 COGO CALCULATION TOOLS
• Calculate Coordinate — new point from bearing + distance
• Distance and Bearing — inverse calculation between two points
• Forward Intersection — from two known points + angles
• Backward Intersection (Resection) — Tienstra's method from 3 known points
• Line-Line Intersection — intersection of two straight lines
• Middle Point — midpoint between two points
• Perpendicular Foot — drop a perpendicular from a point to a line
• Circle by 3 Points — circumscribed circle through three points
• Generate Coordinates — interpolate points along a line
• Interior Angle — angle from three coordinate points
• Bearing from Angles — compute bearings from measured angles
• Angle Converter — Degree ↔ Radian ↔ Grad ↔ Mil
• Helmert Transformation — 2D similarity (4-parameter) transformation
• Horizontal Curve — road/highway curve calculations
• Map Scale — ground distance ↔ map distance

INTERACTIVE UTM MAP
• Real-time GPS with Lat/Long UTM and MGRS coordinates
• Compass with azimuth angle display
• Add edit and manage points lines and areas on the map
• Measure distances and navigate to coordinates
• UTM zone grid overlay
• Persistent GeoPackage storage for all map data

COORDINATE CONVERTER — 592 SYSTEMS 55 COUNTRIES
Convert between local Cartesian and geographic coordinate systems for:
Algeria Australia Belgium Brazil Canada Chile Egypt Ethiopia Finland France Germany Greece India Indonesia Iran Iraq Ireland Italy Kenya Malaysia Mexico Morocco Myanmar Netherlands Nigeria Norway Pakistan Peru Philippines Poland Portugal Russia Saudi Arabia Spain Sweden Tanzania Thailand Turkey UAE United Kingdom USA (state-level) and more.
Powered by the PROJ library — the same engine used by QGIS and ArcGIS.

IMPORT & EXPORT in UTM MAP MODULE
• Import: CSV/TXT GeoJSON KML KMZ
• Export: Text DXF GeoJSON GeoPackage
• GDAL-accelerated import for large spatial datasets

ADDITIONAL TOOLS
• Slope Calculator — from levels coordinates or horizontal/vertical distances
• Area from Coordinates — Shoelace formula with graphical shape display
• LatLong ↔ UTM Converter — WGS84 bidirectional conversion with GPS
• DMS ↔ Decimal degree converter

KEY FEATURES
• Configurable units: meters km miles nautical miles yards feet inches
• Angle units: degrees DMS DM grads (gon)
• Adjustable decimal precision for distances and angles
• North-East / East-North coordinate ordering
• Works offline — all calculations run locally on your device

You can follow news about the app on Facebook Page:
fb.me/surveyingcalculator