Tools
20 calculators grouped by category. Each page shows the formula, units, and a worked example.
Concrete
Paving & Base
Asphalt Tonnage Calculator
Estimate hot-mix asphalt tons from area, thickness, and density.
Base Rock Tonnage Calculator
Estimate crushed rock or aggregate base tons from area, thickness, and density.
Riprap Quantity Calculator
Convert riprap length, width, and thickness into cubic yards and tons.
Paving Area Calculator
Convert pavement length and width into square feet and square yards.
Pipe & Utilities
Excavation
Trench Excavation Calculator
Convert trench length, width, and depth into cubic yards of excavation.
Trench Spoils Calculator
Convert bank trench yards to loose spoils and truckloads using a swell factor.
Backfill Calculator
Estimate trench backfill cubic yards after subtracting pipe displacement.
Truckload Estimator
Convert cubic yards into truckloads using a real truck capacity.
Shrink/Swell Calculator
Convert bank cubic yards to loose and compacted yards.