How Much Gravel Do You Need for a Shed Base?

Start by deciding how far the pad will extend beyond the shed footprint on each side. Site conditions and local requirements affect the right pad design.

Worked example

A 10 by 12 foot shed with a 1-foot extension on each side gives a 12 by 14 foot pad (168 square feet). At 4 inches deep, that is 56 cubic feet, about 2.07 cubic yards before allowance. With 10% extra, it is about 2.28 cubic yards. At an assumed 1.4 tons per cubic yard, the estimate is roughly 3.19 tons.

Density and ordering

Tonnage depends on material density and moisture. Ask the supplier for the appropriate figure and confirm how the material is sold, whether delivery has a minimum, and where the truck can place it.

Verify the plan

Depth, compaction, drainage, soil conditions, access, and construction requirements can change the project. This calculation estimates material only; it is not engineering, permitting, or site-preparation advice. Confirm the design and quantity with a qualified professional or supplier and check local rules and shed-manufacturer instructions.

Use the shed gravel pad calculator to enter your dimensions and supplier quote.