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Mulch and Gravel Calculator

Calculate mulch, gravel and landscape ground-cover costs using dimensions, depth, preparation and local pricing.

Pricing methodology reviewed August 2026 · Planning confidence range shown with every result

Describe your project

Change any selection to update the estimate.

Checking ZIP…
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ZIP validation uses the 2025 Census residential ZCTA file. Costs remain planning estimates, not bids.

What this estimate includes

The calculator separates common material, professional labor, disposal, permit allowance and contingency costs. It also accounts for the project conditions selected above. Sales tax, engineering, hidden damage and unusual access may require additional allowances.

How to use your result

  1. Confirm measurements at the project site.
  2. Compare at least two material choices.
  3. Print the report and request three local written quotes.
  4. Ask each contractor to identify exclusions, permit responsibility and cleanup.

Frequently asked questions

How deep should mulch be?

An established bed may only need a light refresh, while a new installation may need a deeper layer. Excess mulch against trunks, stems or foundations can create moisture problems, so measure the intended depth rather than automatically selecting the largest allowance.

How much does one cubic yard cover?

One cubic yard covers about 324 square feet at one inch deep, 162 square feet at two inches or 108 square feet at three inches before settlement and irregular-edge waste.

Should landscape fabric be included?

Fabric is commonly used below decorative stone, but it may be undesirable beneath organic mulch that is intended to decompose into soil. Confirm drainage and planting needs before adding it.

Need the assumptions? Review our methodology and data limitations.

Depth controls quantity

Coverage changes directly with installation depth. Freshening an established bed may need two inches, while a new bed may use three or four. Rock usually needs a prepared base and durable edging.

Worked example

At three inches deep, one cubic yard covers about 108 square feet before settlement and irregular edges. A 500-square-foot bed therefore needs roughly 4.6 cubic yards, plus a modest ordering allowance.

Common planning mistakes

  • Measuring the full yard instead of subtracting plants and structures.
  • Using landscape fabric where organic mulch should enrich soil.
  • Forgetting delivery minimums and wheelbarrow access.

Editorial review: August 2026. This page has not yet received independent trade-professional review; local written quotes control actual pricing.

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