GravelScope helps organize project information. A calculation is a planning estimate, not approval to build or a confirmed supplier order. Effective date: October 9, 2026 Volume, weight and bag counts depend on measurements, units, material density and product yield. Loose and compacted volumes differ. US short tons, metric tonnes and long tons are not interchangeable. Use the actual product and supplier data. Confirm package sizes, minimum orders and purchase rounding before ordering. A quantity tool does not determine structural adequacy, soil suitability, foundation depth, drainage design or compliance with codes. Ground conditions, climate, loading and installation method can change what a project needs. Follow manufacturer specifications and applicable local rules. Obtain qualified advice where engineering, foundations, excavation, utilities, retaining structures or drainage discharge are involved. Before excavation, use 811’s official guidance and your state’s procedures. Wait the waiting period specified by your state and confirm responses. Public utility marking may not include privately owned lines; arrange additional locating where needed. Prices are local, dated examples or user-entered estimates unless explicitly stated otherwise. Freight, taxes, unloading, minimums, site preparation, equipment, labor and permits may change the final cost. Compare itemized quotes for the same scope. A result above or below a calculator estimate does not alone establish that a contractor’s price is fair or inflated. External resources can change without notice. No claim of professional review applies unless a named reviewer and the review scope are stated. If you find an error, contact [email protected] with the page URL, inputs, units and expected result. See our Editorial Policy and Terms of Use.Calculator & Content Disclaimer
Check the assumptions
Construction and safety
Locate utilities before digging
Price examples and quotes
External resources and corrections