Depth guidance
Walkways settle happily at 2–3 inches; driveways want 4–6 inches over a prepared base. Order 5–10% extra — gravel spreads thinner than planned more often than thicker.
Tons or cubic yards of gravel for driveways and paths, with depth and compaction allowance.
volume (ft³) = L × W × depth(ft); tons = ft³ × density ÷ 2000
A 20×10 driveway at 4 in deep needs about 67 ft³ ≈ 2.5 yd³ ≈ 3.3 tons of standard gravel.
Walkways settle happily at 2–3 inches; driveways want 4–6 inches over a prepared base. Order 5–10% extra — gravel spreads thinner than planned more often than thicker.
Roughly 1.3–1.5 tons for most crushed stone — the calculator converts using your density input.
Cubic yards or meters of concrete needed for slabs, footings and columns — with bags count.
Gallons of paint for a room from wall dimensions, doors, windows and coat count.
Running cost of any appliance from wattage, hours used and your utility rate.
Number of tiles and boxes for any floor or wall area, including cuts, breakage and pattern waste.
Roof squares and material bundles from footprint area and pitch, with waste factor.
Bags or cubic yards of mulch to cover beds at the right depth.