You measured the space twice. The topsoil yard still feels like a guess. Order short and work stops. Order too much and money sits in a pile. This topsoil calculator ends that back-and-forth before you call the supplier.
Topsoil Depth Guide by Project
Overseed an existing lawn with 1/4 to 1/2 inch of topsoil.
New seed lawns need 4 to 6 inches of quality topsoil.
Raised garden beds work best with 8 to 12 inches of depth.
Level low spots with 2 to 3 inches after you rake smooth.
How to Use This Topsoil Calculator
Measure length and width in feet. Convert depth to feet by dividing inches by 12. Enter all three values in the tool above. Read cubic feet, cubic yards, and weight if shown. Add 10% extra for compaction and spill loss.
Key Terms for Topsoil Calculator
When you use a topsoil calculator, these terms show up in inputs, results, or follow-up conversations: cubic yard, cubic foot, and square footage are core to most topsoil calculations. You may also see depth, compaction, and aggregate on reports, quotes, or assignments. Knowing what each field means prevents swapped inputs and misread results.
Topsoil Calculator Formula Explained
Area equals length times width in square feet. Volume in cubic feet equals area times depth in feet. Cubic yards equal cubic feet divided by 27. Dry topsoil weighs about 1,000 to 1,300 pounds per cubic yard.
Real Example With This Topsoil Calculator
A 20 by 10 foot garden bed at 6 inches needs 3.7 cubic yards. That equals about 100 cubic feet or roughly 100 one-cu-ft bags. Bulk delivery saves money above two cubic yards.
Why Topsoil Calculator Math Matters
Wrong topsoil math costs real money on delivery day. Trucks charge per load whether you fill the bed or not. A free tool lets you verify a contractor quote in minutes.
Common Mistakes With a Topsoil Calculator
Mixing inches and feet is the top error. Using compacted depth when you measured loose fill. Skipping the 10% buffer on irregular ground. Ordering by tons without checking material density.
Pro Tips for Better Topsoil Calculator Results
Call your supplier and ask which unit they bill in. Walk the area and note low spots that need extra depth. Save your result before you change unit settings. Compare bag count vs bulk price above two cubic yards.
Frequently Asked Questions
Multiply length × width × depth in feet. Divide by 27 for cubic yards.
Dry topsoil weighs about 1,000 to 1,300 pounds per cubic yard.
Yes. Add 10% for compaction, spill, and uneven ground.
Divide total cubic feet by bag size. A 1 cu ft bag covers 6 sq ft at 2 inches deep.
Topsoil is native soil. Garden soil mixes in compost and nutrients.
Yes. It works on mobile browsers with no app.
Homeowners, landscapers, and DIY builders ordering topsoil.
So Here's the Bottom Line
You have measurements, depth, and a supplier on speed dial. Run the topsoil calculator one more time with your real numbers. Order once. Finish the job without a second delivery fee.
Disclaimer: Material estimates vary by supplier and region.