Dirt Calculator

Instantly calculate how many cubic yards, cubic feet, and tons of dirt you need for any project—free and done in seconds.

  • Free
  • No sign-up
  • Instant results

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How to use it

  1. Enter the length in feet.
  2. Enter the width in feet.
  3. Enter the depth in inches.
  4. Read the cubic yards, cubic feet, and tons results.

What it does – The Dirt Calculator turns the length, width, and depth of a fill area into three useful measures: cubic yards, cubic feet, and an estimated weight in tons. Knowing the volume in cubic yards tells you how many dump‑truck loads to order, while cubic feet helps when you’re buying bagged soil. The ton estimate uses the industry‑standard 1.3 US tons per cubic yard, giving you a quick sense of total mass for transport or labor planning. Just type your dimensions, hit calculate, and the results appear instantly. No guesswork, no manual conversions. Use the numbers to compare supplier quotes, confirm you have enough material, and avoid costly over‑or under‑ordering. The tool also shows the volume in cubic feet, which is handy for small‑scale projects like garden beds or landscaping borders.

Pro tips

  • Add 5‑10% extra volume for compaction and settling.
  • Round up to the nearest half‑yard to simplify ordering.
  • Check supplier specifications; some quote weight per cubic yard differently.
  • Double‑check depth entry; inches vs. feet is a common mistake.

Real-life examples

  • A homeowner planning a new backyard patio needs to know how many cubic yards of sand to order.
  • A landscaper estimating soil for a sloped garden wants both volume and weight for equipment sizing.
  • A contractor filling a foundation trench must calculate cubic feet to match bagged material specifications.

Case study

Jane needed 2.4 cubic yards of topsoil for a raised garden bed. Using the Dirt Calculator, she entered 12 ft × 8 ft × 6 in and saw 2.4 yd³, 3.1 tons, and 65 ft³, allowing her to order exactly one truckload and avoid a costly second delivery.

Frequently asked questions

Can I enter depth in centimeters?
The calculator only accepts depth in inches; convert centimeters to inches first.
Why does the ton estimate seem higher than the volume?
It multiplies cubic yards by the standard 1.3 US tons per cubic yard, reflecting the typical weight of compacted dirt.
Do I need to include a safety margin?
Yes, adding 5‑10% extra volume helps cover settling and compaction.
Is the result in cubic feet accurate for bagged soil?
Cubic feet is exact for the dimensions you entered, making it ideal for matching bag sizes.
What if my project shape isn’t a rectangle?
Break the area into rectangular sections, calculate each, then add the results together.