From this site

One project, every trade

Each calculator adds its lines to a single estimate — consolidated BOM, schedule and cash-flow included.

Open My Project →

Mulch & Gravel Calculator

Estimate how many cubic yards of mulch, gravel, or soil you need to cover an area at a given depth.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-25 · v1.0.1

Market
Imperial · sales tax
9.84 ft6.56 ft0.25 ft
Schematic, drawn to the proportions you entered — not to scale on screen.
Who is doing the work?

The standard allowance most suppliers and estimating guides assume for ordinary work.

Estimated mulch & gravel needed

0.66 cubic yards

High confidence
Area
64.58 ft²
Depth
3 in
Volume (no extra)
0.6 yd³

With the figures above, the result comes to 0.66 cubic yards. Note that area width sits at the low end of the range this calculator was checked against, so treat the output as indicative rather than settled. This is calculated for United States and cites IRC 2024. Building in another market? Change the selector above so the units and code reference follow.

Estimated cost

$47 - $57

  • Mulch, delivered and installed$47 - $57

Estimated national-average pricing, adjusted by a rough regional multiplier — not a quote and not verified for your specific location or supplier. Last verified 2026-08-25.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Standard landscaping formula: cubic yards = area (sq ft) x depth (inches) / 324
  • 1-2 inch depth is typical for fine mulch top-ups; 3-4 inches for coarser new mulch or gravel bases

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

How many bags of mulch is this?
Bagged mulch is typically sold in 2 cubic foot bags — multiply the cubic yards result by 13.5 to get the number of 2 cu ft bags needed (1 cubic yard = 27 cubic feet).
Does this work for gravel and soil too?
Yes — the area x depth / 324 formula is generic to any bulk loose material. Just adjust the depth to what's appropriate for gravel (often 4+ inches for a base layer) or soil.