About this calculator

Volume = length × width × depth. Mulch is usually applied 50–75 mm thick; topsoil 100–150 mm. Order ~10% extra.

Frequently asked questions

What does the Mulch & Topsoil Calculator do?

Calculate cubic metres or cubic yards of mulch, topsoil or gravel for any bed. Volume = length × width × depth. Mulch is usually applied 50–75 mm thick; topsoil 100–150 mm. Order ~10% extra.

Is the Mulch & Topsoil Calculator free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Mulch & Topsoil Calculator?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified landscaping & gardening professional before committing to a purchase or a job.

What inputs does the Mulch & Topsoil Calculator need?

Enter values for: Length, Width, Depth. Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Mulch & Topsoil Calculator on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.