How do I calculate gravel for irregular shapes?+−
Break the area into smaller rectangles or triangles, calculate each section separately, and then add the results together. For highly complex shapes or critical structural projects, consult a professional estimator or engineer.
What is the standard density of gravel?+−
A common default density for gravel is around 1.5 tons per cubic meter, but this can vary based on moisture content, compaction, and rock type. Crushed stone is often closer to 1.6 tons/m³, while pea gravel may be around 1.4 tons/m³.
How much extra gravel should I order?+−
Most contractors recommend ordering 10–15% extra gravel to account for compaction, spillage, grading adjustments, and uneven ground. For projects with tight tolerances, consider rounding up to the nearest full truckload.
Can I use this calculator for other materials?+−
Yes. You can adjust the density value to match other materials like sand, crushed stone, road base, or decorative rock. Ask your supplier for the material’s approximate density in tons per cubic meter.
What is the best gravel for driveways?+−
Crushed stone or a layered system (base gravel plus a top layer of smaller stone) is often preferred for driveways. These materials compact well, provide good drainage, and resist rutting better than loose, rounded gravel.