Free tools
Two free tools for everyday site work. No licence required, and the calculator and converter both run in the browser.
AS 2870 site classification calculator
Work out characteristic surface movement and the resulting site class from soil profile inputs, following AS 2870 as published.
12d Model to DXF converter
Turn a .12da or .12daz handover into a layered DXF that opens in AutoCAD, BricsCAD or Civil 3D, with no 12d licence. Surfaces export as 3D faces, contours or LandXML.