How Much Topsoil Do I Need For Grass Calculator

Calculate how many cubic yards, cubic feet, and tons of topsoil you need for a grass lawn instantly and free.

  • Free
  • No sign-up
  • Instant results

Loading calculator…

How to use it

  1. Enter length (ft), width (ft) and depth (in) of the area
  2. Click the Calculate button
  3. Read the results in cubic yards, cubic feet, and tons
  4. Use the numbers to order the right amount of soil

What it does – You input the length, width (ft) and desired depth (in) of topsoil. The tool converts the volume to cubic feet, then to cubic yards (1 cubic yard = 27 cubic feet), and finally estimates weight using 1.3 US tons per cubic yard. Why it matters – Knowing the exact volume prevents over‑ordering (extra cost) or under‑ordering (project delays). How to read – Cubic yards is the standard unit suppliers use; cubic feet helps visualize the fill; tons gives the weight for delivery quotes.

Pro tips

  • Add 10% extra for compaction and spillage
  • Round up to the nearest half‑yard for easier ordering
  • If the supplier quotes by weight, multiply cubic yards by 1.3 to get tons
  • Double‑check depth conversion from inches to feet before entering

Real-life examples

  • Planning a new backyard lawn and need to know soil volume
  • Renovating a garden bed and want to order just enough topsoil
  • Filling a low spot after grading to level the yard

Case study

Maria entered her 50 ft × 30 ft yard with a 2‑inch depth, got 0.93 cubic yards (≈1.2 tons) and ordered 1 cubic yard, avoiding a costly over‑order and completing her lawn installation on schedule.

Frequently asked questions

How do I convert depth in inches to feet?
Divide the inch value by 12; the calculator does this automatically.
Why is the weight given in tons?
Suppliers often price soil by weight, and 1.3 tons per cubic yard is a common industry estimate.
Can I use the calculator for mulch?
Yes, but use the appropriate weight factor for mulch instead of 1.3 tons.
Do I need to include a waste factor?
Add about 10% extra to cover compaction and spillage.
What if my area isn’t a perfect rectangle?
Break the space into rectangular sections, calculate each, then sum the results.