Knowing exactly how much product you require for your landscaping project might seem like a daunting task, but the team at Rock 'N' Soil can help take the guesswork out of your planning with our handy bulk materials calculator.

Ordering bulk soil or bulk mulch is easy. Simply enter the length, width, and desired depth of your project area into our calculator, and we'll convert those measurements into the exact volume in cubic metres that you'll need.

For advice on the recommended depth requirements for a particular product, you'll find helpful information on each of our product pages.

Our versatile cubic metre calculator supports both metric and imperial measurements, allowing you to enter your dimensions in metres, centimetres, millimetres, or feet. You can also add multiple areas together for L-shaped gardens or separate project zones, making it ideal for more complex landscaping projects.

Rock 'N' Soil supplies premium bulk landscaping materials across Brisbane, the Redlands, and beyond. We can also arrange special deliveries to the surrounding islands and, on occasion, to the Sunshine Coast and Gold Coast.

With more than 14 varieties of garden soil and potting mixes, along with 14 types of mulch and bark products, we offer one of the largest ranges in the Brisbane region. With so many options available, we're confident you'll find the perfect bulk soil or bulk mulch for your Brisbane landscaping project.

Whether you're creating a veggie patch or refreshing your garden beds with a brand-new layer of premium mulch, we offer a range of delivery options to suit your property and budget. Orders can be delivered directly to your home or worksite using the most appropriately sized truck from our extensive fleet. Alternatively, you can collect your order from our yard. You can order online or over the phone, and if you'd like to collect your order yourself but don't have a suitable vehicle, we also offer a free courtesy trailer for up to three hours to help you get everything home safely.

A cubic metre (m³) is the unit of volume we use to sell all of our bulk landscaping products. Some landscaping suppliers sell their products by weight (tonnes) rather than by volume.

We believe measuring by the cubic metre provides a more accurate and transparent pricing structure, as wet weather and other natural conditions can affect the weight of certain products. This means buying by weight can sometimes result in you paying more for the same volume of material than you otherwise would.

One cubic metre is calculated using the following dimensions:

If you're collecting a cubic metre of mulch rather than soil, keep in mind that, due to its larger particle size, mulch weighs significantly less than soil.

In practical terms, 1 m³ of loose mulch will generally fill a standard 1.8 m × 1.2 m garden trailer to capacity.

1 m³ of garden soil weighs approximately 1.3–1.6 tonnes, depending on its moisture content. Because of this, we generally recommend carrying no more than 0.3 m³ (approximately one-third of a cubic metre) in a standard garden trailer.

Sometimes it can be difficult to visualise just how much material a cubic metre represents. If you're planning your project and simply want a general estimate, the guide below provides typical quantities of bulk soil and bulk mulch required for some of the most common landscaping applications.