Home Gravel calculator Gravel calculator
How much gravel do I need? Measure your path, patio base, or driveway area, choose a depth, and get the volume in cubic yards and cubic feet. Add your supplier’s weight figure to see tons. Nothing is prefilled or guessed.
The calculator needs JavaScript to run. The explanation of how it works is below.
Gravel area · saves on this device as you type
Quick answer Pending
Add length, width and gravel depth
Result pending. Add length, width and gravel depth.
Area Pending: length, width
In cubic feet —
Weight Add supplier figure
Status Pending input Gravel plan waiting for measurements Your plan will appear here Your plan will appear here Why this result Every step, with your numbers.
1 Measured area Waiting for measurements.
2 × Depth Waiting for a depth.
3 = Volume in place Waits for area and depth.
4 + Extra you chose Nothing added yet. We never assume an allowance.
5 × Weight per volume (optional) Only with your supplier’s figure. We don’t assume one.
How this gravel calculator works What it calculates Area of each part you measure (rectangle, square, circle or L-shape), minus any parts you leave out.Volume = area × depth, shown in cubic yards and cubic feet (or m³ and litres).Order volume = volume × (1 + the extra you choose).Weight = order volume × your supplier’s weight per volume, only if you enter it.Bags or loads in Store Mode, from the size printed on the bag or quoted for a load.What it does not assume No default depth, extra percentage, or weight per cubic yard. Missing inputs stay pending. No universal compaction factor. Different stones settle differently; your supplier knows their product. No pavement design. Driveway base depth depends on soil, drainage and traffic. Worked example: a 10 × 20 ft path, 3 inches deep Area: 10 ft × 20 ft = 200 sq ft. Depth: 3 in = 0.25 ft. Volume = 200 × 0.25 = 50 cu ft. In cubic yards: 50 ÷ 27 = 1.85 cu yd. With 10% extra chosen: 55 cu ft, or 2.04 cu yd to order. If the yard says the product weighs 1.4 tons per cu yd: 2.04 × 1.4 = 2.85 tons. In 0.5 cu ft bags instead: 55 ÷ 0.5 = 110 bags. Cubic yards per 100 sq ft, by depth Pure arithmetic: 100 sq ft × depth in feet ÷ 27. Multiply by your area ÷ 100. Before any extra or compaction allowance.