Free Mulch & Landscape Material Calculator Widget
The embedded Mulch & Landscape Material Calculator turns a bed's area and depth into cubic yards and bag counts for mulch, topsoil or compost, and compares the cost of buying in bulk against bags at that quantity. It fits garden centres and mulch/soil yards, landscapers, and gardening how-to sites.
It's a single iframe plus a one-line credit link — free, responsive, no registration, and no ads or tracking scripts on your page.
Live preview
The embed adds no ads and no tracking to your page. Prefer a guided version with a preview? Use the embed builder.
Credit line included
The code ends with a one-line credit under the calculator: “Mulch & Landscape Material Calculator by Build Material Planner”, linking to the full calculator. Please keep it. It's what keeps these calculators free to build and maintain, and it helps other people find them.
Why add it to your page
Bags or bulk is the question most mulch buyers are really asking, and the answer changes with the size of the bed. The calculator works it out at the reader's own quantity, so a garden article can answer for their bed instead of in general terms.
What your visitors get
A 20 x 10 ft bed, 3 in deep in shredded hardwood comes back as:
- Shredded Hardwood Mulch (bulk): 2.04 cu yd
- Shredded Hardwood Mulch (bagged, 2 cu ft each): 28 bags
- Bagged estimate: $112 – $168
Where the Mulch & Landscape Material Calculator widget fits
- A garden centre or mulch yard's bulk-delivery page
- A "how much mulch do I need" or "when to mulch" article
- A landscaper's project-planning or quote page
How to add it to your site
Copy the code above and paste it where the calculator should appear. See the install notes for WordPress, Squarespace, Wix and Webflow, plus sizing and common questions.
Questions from site owners
Does it compare bulk vs. bagged?
Yes — it works out the cost both ways at the reader's quantity and says which is more economical, factoring in typical bulk-delivery minimums.
Does it cover topsoil and compost, not just mulch?
Yes — the material dropdown includes shredded hardwood, pine bark, topsoil and compost, each with its own bag size and pricing.
What depth does it start at?
3 in. Readers can set anything from 0.5 to 24 in, so a thin top-up and a new bed both work.
Just need to run the numbers yourself? Use the full Mulch & Landscape Material Calculator — it has the formulas, a worked example and an FAQ. Also for your readers: Soil Calculator widget, Gravel Driveway Calculator widget, Paver Calculator widget. Or see all embeddable calculators.