Topsoil Calculator
Estimate topsoil volume in cubic yards, tons, and bags for lawn renovation, garden beds, leveling, or raised planters.
Enter Your Dimensions
US • ftHow We Calculated This
• Bulk delivery is significantly cheaper than bagged material once your project exceeds 2 cubic yards (approx 27 bags).
• Lightly moisten soil before spreading to prevent loose material from drifting.
Formula & Volumetric Method
Volume (yd³) = Length (ft) × Width (ft) × (Depth (in) ÷ 12) ÷ 27. Multiply by compaction factor (1.12 to 1.15) for fluffy loam settling.
Calculations are performed strictly using standard civil engineering constants. Volumetric outputs are normalized to true compaction rates, ensuring purchased quantities match jobsite yields.
Jobsite Engineering Guidelines
- For new lawn seeding or sodding, provide at least 4 to 6 inches of rich organic topsoil.
- For topdressing existing turf, apply a thin 1/4 to 1/2 inch layer followed by aeration and overseeding.
- Loam topsoil compacts roughly 10% to 15% after spreading, watering, and rolling.
Frequently Asked Questions
How accurate is the Topsoil Calculator for ordering materials?
Our calculations match standard store packaging sizes in the US, Canada, UK, and Australia. We include a safety waste buffer (default 8% to 12%) so you do not run short due to uneven ground or spillage.
Why should I add extra for waste when ordering?
Uneven ground, cutting scrap, and leftover mix in the wheelbarrow or mixer drum consume an extra 5% to 15% of material. Ordering only the exact measurement usually leaves you short, which can lead to expensive extra delivery fees.
Does this calculator support both Imperial and Metric units?
Yes. You can switch between US Customary (feet, inches, cubic yards, pounds), Canadian units, UK metric, and Australian standards using the region selector in the header or the unit dropdown on each input.