How Much Dirt Do I Need Calculator

Calculate how many cubic yards, cubic feet, and tons of dirt you need for any project instantly and free.

  • Free
  • No sign-up
  • Instant results

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How to use it

  1. Enter length in feet.
  2. Enter width in feet.
  3. Enter depth in inches.
  4. Click Calculate to see cubic yards, cubic feet, and tons.

What it does – The calculator converts the dimensions of your fill area (length × width × depth) into three useful measures: cubic feet, cubic yards, and approximate tons of dirt. Why it matters – Knowing cubic yards tells you how many dump‑truck loads to order, cubic feet helps with budgeting material, and the ton estimate lets you compare prices from suppliers that charge by weight. How to read the results – One cubic yard equals 27 cubic feet; the ton figure is simply the cubic‑yard total multiplied by 1.3 US tons. Use the numbers to place an accurate order and avoid costly over‑ or under‑purchasing.

Pro tips

  • Add 5‑10% extra volume for compaction and spillage.
  • Round up to the nearest half‑yard for easier ordering.
  • Compare supplier quotes using the ton estimate, not just volume.
  • Double‑check depth entry; inches vs. feet is a common mistake.

Real-life examples

  • A homeowner preparing a 10 ft × 12 ft garden bed 6 in deep.
  • A contractor estimating fill for a 30 ft × 40 ft driveway 8 in deep.
  • A landscaper ordering soil for a 5 ft × 5 ft raised patio 4 in deep.

Case study

Jane needed to fill a 12 ft × 15 ft area 6 in deep for a new patio. The calculator showed 4.0 cubic yards (108 cubic feet) and about 5.2 tons, so she ordered exactly that amount and avoided a costly extra truck.

Frequently asked questions

How do I convert the calculator’s cubic yard result to dump‑truck loads?
One standard dump‑truck carries about 10‑12 cubic yards; divide your yardage by that number and round up.
Why does the ton estimate differ from the weight on the supplier’s sheet?
The calculator uses a generic 1.3 US tons per cubic yard; actual soil density can vary, so treat it as an approximation.
Can I use the tool for sand or gravel?
Yes, but adjust the weight per cubic yard if you have a specific density; the default is for typical topsoil.
What if my depth is in centimeters?
Convert centimeters to inches (1 in = 2.54 cm) before entering the value.
Do I need to account for compaction?
Add a 5‑10% waste factor to the cubic‑yard result to cover compaction and settling.