Free civil engineering and BIM tools, online
Contour maps as DXF, UTM coordinates on Google Maps, UTM to lat long conversion, lot area with a metes and bounds description, and Manning's equation. Online, no sign-up, with exports to Civil 3D, AutoCAD, Excel and Google Earth.
Free calculators, ready to use
UTM coordinates on Google Maps
Paste a site plan coordinate table and see where it is. Fixes legacy datums, checks the table and opens the location in Google Maps.
UTM to lat long converter
Convert one point or hundreds pasted from Excel, check them on a map and export to Civil 3D, Excel or Google Earth, with the scale factor per point.
Area from coordinates calculator
Lot area and perimeter from coordinates or measured sides, bearings and distances, a metes and bounds description in Word and a DXF plat.
Contour map generator
Pick an area on the map and download its contour lines as DXF for AutoCAD and Civil 3D, plus points to build the surface. For preliminary studies.
Manning's equation calculator
Flow, velocity and normal depth in partially full pipes and open channels, with Froude number and boundary shear.
From tool to plugin
These tools solve a one-off case. If your team repeats the task on every project, we automate it inside Civil 3D or Revit with a custom plugin.