Surveying & GIS

Traverses, curves, coordinates, map scale, GPS accuracy, and property boundary tools for surveyors.

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Calculate polygon area from coordinate pairs using the shoelace (Gauss) formula. Supports 4-6 vertices with perimeter and centroid output.

Calculate bearing (azimuth and quadrant) and horizontal distance between two survey coordinate points.

Convert between geographic coordinates (latitude/longitude) and UTM (Universal Transverse Mercator) using WGS84 datum.

Calculate horizontal curve elements including radius, arc length, tangent, chord, external distance, and middle ordinate for highway and road design.

Estimate GPS/GNSS positional accuracy from satellite geometry (GDOP/PDOP), correction method, and environmental factors.

Calculate cut/fill depth, grade rod, and slope stake offsets from design elevation, ground survey, and instrument setup for construction staking.

Convert between map distance and ground distance at a given scale ratio. Includes accuracy standards and scale classification.

Calculate lot area, perimeter, and buildable area from metes and bounds descriptions with closure analysis and setback checks.

Compute latitude, departure, closure error, precision ratio, and enclosed area for a 4-leg closed survey traverse.

Calculate parabolic vertical curve elevations, K-value, high/low point, and minimum length for crest and sag curves using AASHTO standards.