Calculator directory
Focused tools for
roadway work.
Choose a calculator built around visible assumptions, traceable methods, and engineering review.
Roadway GeometryFree + Pro

Superelevation
Calculate roadway superelevation transitions, review lane slopes, and create traceable engineering exports.
Open professional workspace↗
Construction QuantitiesFree

Crushed Stone Base
Estimate compacted roadway base volume and order tonnage across multiple construction segments.
Open free quantity tool↗
ENGINEERING AIDS
Verify criteria, inputs, assumptions, results, and applicability against governing requirements before use in design or construction.