Fill Dirt Calculator
Estimate fill dirt by volume and weight.
Enter the area and depth you need to fill to get the volume in cubic yards and cubic feet plus an approximate weight in tons. Use this for raising low spots, backfilling, and grading.
How it works
Volume is area × depth (in feet) ÷ 27 for cubic yards. Compacted fill dirt weighs roughly 1.2 tons per cubic yard. Fill settles, so order extra and compact in lifts when raising grade significantly.
Frequently asked questions
How much fill dirt do I need?
Multiply area by depth in feet and divide by 27. A 20×10 ft area at 4 inches deep needs about 2.47 cubic yards.
How much does fill dirt weigh per yard?
Roughly 1.2 tons per cubic yard compacted, varying with moisture and clay content.
Should I order extra fill dirt?
Yes — fill settles and compacts, so add 10–20% when raising grade and compact it in layers.
Is this calculator free and private?
Yes. Every CubicCabin calculator runs entirely in your browser, so the numbers you enter are never uploaded or stored. There's no sign-up, no limits, and it keeps working even if you lose connection after the page loads.