Estimate the volume and weight of gravel or aggregate needed for an area.
Gravel and aggregate are sold and delivered by volume (cubic yards) or weight (tons), so this converts your project's area and desired depth into both. Formula: cubic yards = (area × depth in feet) ÷ 27, then weight ≈ cubic yards × 1.4 tons.
1.4 tons per cubic yard is a typical density for standard crushed stone or gravel — actual density varies somewhat by material type (crushed granite, river rock, and pea gravel all differ slightly).
This is the same underlying volume math as the site's concrete calculator, applied to a different material — useful for driveways, walkways, and drainage projects rather than poured concrete.
A 200 sq ft area at 3 inches deep needs about 1.85 cubic yards, weighing roughly 2.59 tons of standard gravel.
A common range is 4-6 inches for a base layer plus a top layer, though exact recommendations vary by expected vehicle weight and local soil conditions — check with your gravel supplier for a project-specific recommendation.
Yes, somewhat — this uses a typical average density; denser materials like crushed granite can run slightly heavier per cubic yard than lighter materials like pea gravel.
A small buffer (5-10%) is common practice to account for compaction and uneven ground, similar to the buffer recommended for concrete orders.