Gravel for French Drain Calculator

Gravel Calculator

Volume = length × width × depth. 1 cubic yard = 27 cubic feet. Tons depend on material density, so the density used is shown in the result.

Preset

Length (feet)

Width (feet)

Depth (inches)

Material

Waste (%)

Compaction (%)

Price per ton ($) - optional

Area: - sq ft

Volume: - cubic yards

Weight: - tons

To order (with waste and compaction): - tons / - cubic yards

50 lb bags: -

Material cost: $-

Estimate only. Density varies by quarry and moisture. For large orders, confirm with your supplier's scale ticket. Delivery, minimum order and labour are usually extra.

Estimate gravel for a French drain trench.

Trench volume

length x width x depth, in cubic yards.

Worked example

Subtract the pipe volume for a precise number, but the trench volume plus 10 percent waste is a safe planning number.

Material

Use washed #57 stone around the perforated pipe, wrapped in fabric.

Estimate only. Confirm with your supplier before ordering.