Topsoil Calculator
Determine the volume of loam, compost, or potting mix needed for garden beds, lawn leveling, or landscaping. Supports weight in tons and suggests delivery sizes.
1 · Project Specifications
Dimensions
Length of the area to fill with topsoil.
Width of the area to fill with topsoil.
Depth or thickness of the topsoil layer.
Options
Adds extra topsoil (10% recommended) to cover soil compaction and natural settling.
2 · Material Estimates
Estimation Results
Enter your measurements and click Calculate to see your estimate.
Detailed Project Guide & Calculation Methodology
Calculation Formulas & Methodology
Volume Formula
Volume = Length × Width × DepthCalculates raw three-dimensional volume of soil required.
Cubic Yards of Soil
Cubic Yards = (Length (ft) × Width (ft) × (Depth (in) / 12)) / 27Converts depth to feet, determines cubic feet of soil space, and divides by 27 to yield yards.
Topsoil Weight conversion
Tons = Cubic Yards × 1.25Applies the average dry bulk density of clean topsoil (1.25 short tons/yd³ or 92.6 lbs/cu ft).
How It Works
- 1Choose your input units and output unit system.
- 2Enter the length and width of the area to be filled.
- 3Input the required depth (e.g., 2 inches for top-dressing, 6 inches for turf beds, 12 inches for deep roots).
- 4Adjust the waste slider (10% accounts for settling and uneven subgrade).
- 5Click Calculate to review your soil volume, weight, and delivery options.
Frequently Asked Questions
Dry topsoil weighs approximately 2,500 pounds (1.25 short tons) per cubic yard. Wet topsoil can weigh significantly more (up to 3,000 pounds or 1.5 tons).
For grass seeding or sod installation, a minimum of 4 to 6 inches of high-quality topsoil is recommended to support deep root systems.
Soil is typically sold in bags of 0.75 cubic feet or 1 cubic foot. There are 27 cubic feet in one cubic yard, so it takes 27 bags of 1 cu ft or 36 bags of 0.75 cu ft to fill a yard.
Yes, but it should be blended with compost, peat moss, and perlite (a 50/50 mix of topsoil and compost is a common blend) to improve aeration and drainage.
✓ Pro Tips
- •Topsoil settled height will be about 10-15% less than the freshly poured height. Order 10% extra and pack it lightly.
- •For vegetable gardens, mix topsoil with 30-50% organic compost to enrich nutrients and promote healthy crop growth.
- •If your calculations show more than 1 cubic yard is required, order bulk delivery from a local nursery; it's a fraction of the cost of bags.
⚠ Common Mistakes
- •Forgetting soil settling: Loose soil compacts after watering and rain. If you don't add 10-20% extra, your beds will sit too low.
- •Using topsoil for pots: Topsoil is too heavy and compacts too tightly for containers. Use potting mix instead.
- •Poor weeding: Leaving weeds or sod in place before laying new topsoil can cause them to grow right back through the new soil.
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- Topsoil Depth Guide: How Much Topsoil for Lawns & Gardens
Learn the recommended topsoil depth for lawns, gardens, raised beds, and grading.
DIY Estimation Checklist
- •Measure lengths and heights twice for accuracy.
- •Check product labels for actual coverage rates.
- •Order materials with a 10% buffer for cuts and waste.
- •Account for doors, windows, and obstacles.
- •Compare quotes from at least two suppliers.