CADGISDMS ↔ Decimal Degrees
Convert latitude and longitude between degrees-minutes-seconds and decimal degrees.
FreeFree Online Tools
Fast, free calculators and converters for surveying, GIS and engineering work. Everything runs in your browser — no sign-up and no data uploaded.
Angle & Coordinate Tools
Coordinate Format Converter
Convert latitude and longitude between DD, DMS and DDM formats.
FreeUTM Tools
UTM zone finder and lat/long ↔ UTM conversion.
Coming soonSurveying Calculators
Coordinate Area & Perimeter
Polygon area and perimeter from X,Y coordinates, in m², hectares and acres.
FreeBearing & Distance Calculator
Distance, azimuth and quadrant bearing between two coordinate points.
FreeTraverse Calculator
Coordinates from bearings or azimuths and distances, with closure and closing leg.
FreeSlope & Grade Calculator
Grade %, slope ratio, slope angle and elevation difference.
FreeSurvey Calculators
Traverse, levelling and other computations.
Coming soonUnits & GIS Utilities
Unit Converter
Length, area and angle unit conversions.
Coming soonGIS Utilities
Handy helpers for everyday GIS tasks.
Coming soon