Soil and Mulch Calculator
CALCULATE THE RIGHT AMOUNT OF MULCH OR SOIL FOR YOUR PROJECT
Planning a landscape project? Mahoney’s Mulch and Soil Calculator makes it easy to figure out exactly how much material you’ll need—so you can avoid overbuying or coming up short. Whether working on a small garden bed or tackling a larger outdoor renovation, our calculators are designed to simplify the process and give you accurate results.
Enter your bed’s dimensions—length, width, and depth—and the tool will convert your measurements into the appropriate volume in cubic yards, cubic feet, or bags. For bulk projects, use our By the Yard calculator to determine how many cubic yards of mulch or soil you’ll need for delivery or pickup.
WHICH CALCULATOR SHOULD I USE?
Use the bagged material calculator for smaller-scale projects or DIY jobs where convenience is key.
Use the By the Yard calculator for large beds or when purchasing bulk mulch or soil.
By The Bag
By the Yard
1 yard = 27 cubic feet
BULK PRODUCTS AVAILABLE AT MAHONEY’S
- Screen Loam
- Ocean Enriched Compost
- Leaf Compost
- Mahoney’s Signature Brown Mulch
- Dark Mix Mulch
- Hemlock Mulch
BAGGED PRODUCTS IN OUR ROOTED GOODS LINE
Our calculator includes Mahoney’s Rooted Goods line of bagged mulches and soils—formulated to support healthy, vibrant landscapes across New England. Below is a selection of some customer favorites, but you can view the full Rooted Goods lineup here to explore all options.
BAGGED SOILS:
- All-Purpose Potting Mix – great for containers and beds
- Uncle Mike’s Organic Growing Blend – ideal for raised beds and edible gardens
- Ocean Enriched Compost – rich in nutrients to support plant health
- Compost Planting Blend – adds structure and organic matter to existing beds
- Top Notch Top Soil – a high-quality base for new lawns and garden beds
BAGGED MULCHES:
- Natural Cedar Bark Mulch – pest-resistant, long-lasting, and aromatic
- Natural Dark Bark Mulch – rich, dark color for added curb appeal
- Natural Hemlock Bark Mulch – fine texture with a warm, reddish hue
- Natural Pine & Spruce Bark Mulch – blends beautifully with natural landscapes
- Restorative Bark Mulch Blend – enhances soil health and appearance
WHY MULCH?
Mulching helps retain soil moisture, suppress weeds, regulate soil temperature, and protect against erosion. As organic mulch breaks down, it also adds nutrients back into the soil—improving soil structure over time. Mulch is available in both bulk and bagged formats; bagged mulch is ideal for smaller beds or hard-to-reach areas, while bulk is more cost-effective for larger projects.
HOW TO CALCULATE:
Measure your bed’s length and width in feet.
Choose your desired depth of coverage (typically 2–3 inches).
Use the calculator to determine the total volume in cubic yards, cubic feet, or bags.
QUICK TIP:
One cubic yard equals 27 cubic feet. A 100 sq ft bed at 3 inches deep needs about 0.75 cubic yards, or roughly 13.5 bags of mulch if each bag contains 2 cubic feet.
HAVE AN IRREGULAR SPACE?
Break it into smaller rectangles and calculate each section separately—then add the totals. The calculator helps ensure precise coverage even for complex garden layouts.
READY TO GET STARTED?
Order your bulk soil or mulch on our website and let us bring it to you! Or visit your local Mahoney’s Garden Center or use the calculator on this page to determine exactly how much mulch or soil you need. Whether you’re enhancing curb appeal or improving your garden’s health, planning ahead with the right amount of material makes all the difference.
