Soil Calculator — Estimate Topsoil or Fill Dirt Needed
Calculate cubic yards of topsoil or fill dirt needed. Enter bed dimensions and depth for gardens; lawns; or grading.
Whether filling raised beds; topping a lawn; or grading a yard; accurate soil estimates prevent costly over-delivery or shortfalls. Soil is heavy — a cubic yard weighs about 2000 pounds.
How many cubic yards of soil for a raised bed?
Length x width x depth (in feet) divided by 27 = cubic yards. A 4x8 foot bed; 12 inches deep = 32 cubic feet / 27 = 1.2 cubic yards. Order 1.5 to account for settling.
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How This Material Calculator Works
This calculator uses industry-standard formulas to estimate the quantity of materials needed for your project. It factors in standard waste allowances (typically 5-10% depending on material type) so you purchase enough without significant overbuying. Measurements are based on common product dimensions available at major retailers and building supply stores. For best results, measure your project area carefully and round up to the nearest whole unit when purchasing.
Tips for Accurate Material Estimates
Always measure twice before ordering materials. Account for cuts, corners, and irregular shapes by adding 10% extra for most materials. For concrete and masonry, consider the subgrade preparation and drainage requirements. Check local building codes before starting any project — permits may be required for structural work, fencing over certain heights, or decks above ground level. Buy materials from the same batch to ensure color consistency, especially for tiles, pavers, and paint.
Key Information
| Parameter | Details |
|---|---|
| Weight per Cubic Yard | About 2000 lbs |
| Raised Bed Depth | 6-12 inches typical |
| Lawn Top Dressing | 0.25-0.5 inches |
| Delivery Minimum | Usually 3-5 cubic yards |
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Use Calculator NowFrequently Asked Questions
How many cubic yards of soil for a raised bed?
Length x width x depth (in feet) divided by 27 = cubic yards. A 4x8 foot bed; 12 inches deep = 32 cubic feet / 27 = 1.2 cubic yards. Order 1.5 to account for settling.
What is the difference between topsoil and garden soil?
Topsoil is the top 4-12 inches of natural earth — good for grading and filling. Garden soil is topsoil amended with compost and nutrients — better for planting.
How much does topsoil cost?
Bulk topsoil costs $15-$40 per cubic yard plus delivery ($50-$150). Bagged topsoil costs about $2-$5 per 40-pound bag; which equals $100-$250 per cubic yard — much more expensive.
How much extra material should I order?
For most construction materials, order 10% extra to account for cuts, waste, breakage, and mistakes. For tiles and pavers, add 15% if using a diagonal or herringbone pattern. Concrete should include a 5-10% overage since running short mid-pour is costly. Always keep leftover materials for future repairs.
Do I need a permit for my project?
Permit requirements vary by location and project scope. Generally, structural work (walls, roofing, foundations), electrical, plumbing, fences over 6 feet, and decks above 30 inches require permits. Cosmetic work like painting, flooring, and landscaping usually does not. Check with your local building department before starting.
How do I convert between material units?
Common conversions: 1 cubic yard = 27 cubic feet. 1 square (roofing) = 100 sq ft. 1 board foot = 1 inch × 12 inches × 12 inches of lumber. Concrete is sold in cubic yards; multiply length × width × depth in feet and divide by 27. Our calculator handles these conversions automatically.
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Last updated: March 2026