Surveying Calc: COGO & Maps

No more need for a PC on-site!

"Construction Surveying Calculator" is a highly mobile surveying calculation app developed for professionals in civil engineering, construction, and surveying.

Instantly resolve issues—such as sudden design changes, on-site batter board (staking) calculations, and coordinate verification—using only your smartphone. With 40 types of calculation formulas and Google Maps integration, it dramatically boosts the efficiency of your fieldwork.

📐 [Key Features for the Job Site]

Includes practical calculation functions based on real-world field feedback.

・Scientific Calculator: Full support for Degrees-Minutes-Seconds (DMS: DD.MMSS) input.

・Construction Surveying: Traverse calculations (open, link, closed, compass rule, transit rule), reverse staking, intersection calculations, eccentricity correction, area calculations.

・Applied Surveying: Simple curves, clothoid curves (basic, symmetrical, and width stake calculations).

・Leveling: Height of Instrument (HI) method, Rise and Fall method, stadia surveying (with verification function).

・Math Formulas: Trigonometry (Sine/Cosine rules), Pythagorean theorem, coordinate transformation.

・Supports units other than meters (ft, ft-US, yd).

・Automatic optimization of "XY-axis orientation" to match surveying standards in different countries.

🗺️ [Visual Understanding via Map Integration] (*Some features require a subscription)

Instantly plot calculated coordinates on Google Maps to intuitively check for discrepancies between the site and the drawings.

・Display up to 1,000 coordinates on the map.

・Tap a survey point (WGS84) on Google Maps to automatically convert it to the Plane Rectangular Coordinate System.

・Usable at job sites worldwide! Supports UTM and local coordinate systems for 16 countries.

🔄 【Data Integration & SIMA Support】

Seamless data exchange with office PCs and surveying equipment.

・Supports saving and loading formats such as GeoPackage, SIMA, GeoJSON, and KML.

・Save calculation results as XML or CSV for easy export to Excel or CAD software.

・Integrate with the companion app "Surveying Point" for enhanced GNSS-based survey point management.

👷 【Recommended for】

・Civil engineering construction managers, land surveyors, and land and house investigators.

・Professionals who need to perform coordinate calculations or stakeout operations on-site at short notice.

・Those who want to perform preliminary layout work without carrying heavy surveying equipment or a PC.

※Most calculation features are available for free. Cost-effective subscription plans are available for advanced map integration and multi-point data management.