🌱 Topsoil Calculator - Free Volume, Bags & Cost Estimator 2026

A cubic yard of topsoil weighs approximately 2,000 pounds (1 ton) when dry and up to 2,400 pounds when wet. The weight varies based on moisture content, composition, and compaction. Sandy topsoil weighs slightly less (1,800 lbs/yard) due to lower density, while clay-heavy topsoil can reach 2,200 lbs/yard dry weight.

For transport planning, calculate 1 ton per cubic yard for standard topsoil, 1.2 tons for wet soil, and 0.9 tons for sandy topsoil. A pickup truck typically hauls 1-2 cubic yards safely, while a dump trailer handles 4-6 yards depending on vehicle capacity. Always check your vehicle's payload rating before loading topsoil.

For new lawns, spread 4 to 6 inches of quality topsoil to establish healthy grass roots that reach deep for water and nutrients. This depth supports strong turf that withstands drought, foot traffic, and weed competition. Existing lawns benefit from 1 to 2 inches of topdressing to improve soil quality without burying grass crowns.

Vegetable gardens need 8 to 12 inches of topsoil mixed with compost for productive crops. Raised beds perform best with 12 to 18 inches of topsoil blend, providing ample rooting depth for tomatoes, peppers, and root vegetables. Flower beds thrive with 6 to 8 inches of topsoil. Thinner applications (under 2 inches) work for filling low spots and leveling minor grade issues.

You need approximately 54 bags of 40 lb topsoil to equal 1 cubic yard. Each 40 lb bag contains about 0.75 cubic feet, and 1 cubic yard equals 27 cubic feet (27 ÷ 0.75 = 36 bags). However, bagged topsoil is often sold slightly compressed, requiring 50-54 bags per yard in practice.

For other common bag sizes: 27 bags of 1 cubic foot equal 1 yard, while 13.5 bags of 2 cubic feet equal 1 yard. Buying bulk topsoil saves 30-50% compared to bagged soil for projects requiring 3+ cubic yards. At $4 per bag, 54 bags cost $216 versus $25-$50 for bulk delivery of 1 yard.

Buy bulk topsoil if you need 3+ cubic yards (saves 30-50% vs bags) and have access for delivery trucks. Bulk costs $25-$50/yard delivered, while bagged runs $2-$6 per 40 lb bag (54 bags = $108-$324 per yard). The savings become substantial on larger projects: a 10-yard order saves $1,080-$2,740 buying bulk.

Choose bagged topsoil for small projects under 1 cubic yard, when you need premium specialty blends (cactus mix, organic garden soil), or if bulk delivery access is limited. Bags offer convenience for carrying to backyard areas, rooftops, or tight spaces inaccessible to dump trucks. You can also buy bags gradually over multiple trips rather than committing to a full bulk load.

Topsoil is natural surface soil suitable for lawns, grading, and general landscaping, typically costing $25-$50/yard. It contains minerals, organic matter, and soil organisms but may have weeds, rocks, and inconsistent texture. Use topsoil for lawn installations, filling low areas, and topdressing.

Garden soil is topsoil blended with compost (20-40%), peat moss, and nutrients, running $35-$60/yard. This enriched mix is formulated specifically for planting beds and vegetable gardens. Potting soil is a sterile, soilless mix containing peat moss, perlite, vermiculite, and nutrients designed for containers. It costs $8-$15 per cubic foot in bags and provides excellent drainage for potted plants.

Use topsoil for lawns and grading, garden soil for beds, and potting soil for containers. Never use potting soil for in-ground applications (too expensive), and avoid garden soil in pots (poor drainage, too heavy).

Bulk topsoil costs $25-$50 per cubic yard delivered in 2026, with standard unscreened topsoil at the lower end ($25-$35/yard) and premium screened topsoil at $40-$50/yard. Premium organic topsoil blended with compost runs $45-$70/yard. Prices vary by region, with urban areas 20-30% higher than rural locations.

Bagged topsoil (40 lb bags) costs $2-$6 per bag at retail stores like Home Depot and Lowe's. Delivery fees add $50-$150 depending on distance and order size, often waived for orders of 10+ yards. Calculate your project using our topsoil calculator to compare bulk versus bagged pricing and determine the most cost-effective option for your specific needs.

Calculate topsoil volume by multiplying length × width × depth in feet, then divide by 27 to convert cubic feet to cubic yards. For a 20 ft × 10 ft lawn with 4 inches (0.33 ft) depth: (20 × 10 × 0.33) ÷ 27 = 2.44 cubic yards. Always add 10% waste factor for irregular areas, settling, and spillage.

For circular areas, use π × radius² × depth ÷ 27. A 10-foot diameter circle with 6-inch depth: 3.14 × 5² × 0.5 ÷ 27 = 1.45 yards. This topsoil calculator handles rectangles, circles, triangles, ovals, trapezoids, and custom shapes automatically, providing exact material quantities and cost estimates. Convert inches to feet by dividing by 12 (6 inches = 0.5 feet).

Yes, mixing topsoil with existing soil improves soil structure, drainage, and nutrient content. For best results, till or turn the existing soil 6-8 inches deep before spreading topsoil, then blend thoroughly using a rototiller or garden fork. This prevents creating distinct layers that restrict root growth and water movement.

Mix ratios depend on existing soil quality: blend 50/50 topsoil to native soil for poor or compacted ground, or add 2-4 inches of topsoil over decent soil and mix the top 6 inches. Adding compost (20-30% by volume) to the blend enhances fertility and water retention. Never simply pile topsoil on top without mixing, as this creates drainage problems and prevents roots from reaching deeper nutrients.