Scope of the calculator
GravelMeasure estimates area, volume, mass and purchasing quantities from your inputs. Volume = area × depth. Mass also depends on the density you enter. You are responsible for checking dimensions, units, allowances and supplier terms before purchasing.
Site-specific decisions
The site does not provide a survey, engineering certification, structural design or a supplier quote. Verify construction requirements and material suitability with qualified local professionals. No outcome, material performance or price is guaranteed.
Your data and availability
Keep an exported backup of projects you need. Browser data may be cleared or unavailable. The optional map provider is external and may be unavailable or change its service. Use the numeric calculator or a local plan as a fallback.
No transaction
Entering a price or printing an estimate does not buy material, reserve delivery or form an agreement with a supplier. Prices and taxes are user supplied and must use one consistent currency.
Corrections and updates
The formulas and source assumptions are documented in the methodology. Recheck estimates when inputs, prices or the application change. See calculation help for checking a result against reproducible examples.