Road Base Calculator for DGB20 & Crusher Dust
Estimate road base, DGB20 or crusher dust volume for your project. See cubic metres first, plus indicative weight and ordering equivalents.
Calculate Your Road Base
Editable presets only — confirm the required depth for your project
Total Volume
Volume: Length × Width × Depth (converted to metres). For circles: π × radius² × depth. For triangles: ½ × base × height × depth.
Weight: Volume × the selected indicative density. Confirm the exact product conversion with the supplier; see Methodology & Sources.
20 kg equivalent: Estimated kilograms ÷ 20, rounded up. This is a mass comparison, not a retail pack count.
1 m³ bulk-bag equivalent: Volume ÷ 1.0, rounded up. Confirm the supplier's actual bulk-bag size.
Calculate Road Base Volume Transparently
Enter the measured shape, dimensions and specified depth. LandscapeCalc calculates uncompacted geometric volume and does not add a hidden compaction, settlement or waste allowance.
Material Names Are Not Universal Specifications
DGB20, DGB10, FCR, recycled road base and crusher dust can differ between suppliers and jurisdictions. The dropdown identifies calculator coefficients only; it does not certify grading, compliance or suitability for a project.
Loose and Compacted Quantities Can Differ
Compaction changes the relationship between measured finished volume and delivered loose material. Ask the supplier or project designer which depth, compaction factor and product specification to use, then enter those project requirements into the calculator.
Use Weight as a Secondary Estimate
The tonnes result uses an indicative density and must not be used to determine a vehicle or trailer's legal load. Confirm the exact supplier conversion and delivery requirements before ordering. See the Methodology & Sources page for the complete calculation basis.