Topsoil Calculator
Instantly calculate the exact amount of topsoil you need in cubic yards, cubic meters, and bags. Save money and time by buying the perfect amount for your raised beds, lawns, and gardens.
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How to Calculate Topsoil
Measure the Area
Find the length and width of your garden bed. Enter the number of identical beds you have, or use the "Multiple" tab for complex shapes.
Choose the Depth
Decide how thick you want the new topsoil layer. You can optionally subtract any existing soil depth you already have.
Get Your Results
Enter the numbers above. We'll instantly calculate your cubic yards, cubic meters, required bags, and estimated weight.
(Sq Ft Area × Depth in inches) ÷ 324 = Cubic Yards
To find cubic yards manually, you first find your square footage (Length × Width in feet). Since a cubic yard is a 3D measurement (27 cubic feet), you multiply your square footage by your depth in feet (inches divided by 12), and then divide by 27. The shortcut is dividing by 324!
Everything You Need to Know About Buying Topsoil
Why Should You Add Fresh Topsoil?
Adding fresh topsoil or compost improves nutrient density and drainage in your garden. Over time, plants deplete organic matter, and the ground can become compacted. Adding a fresh layer revitalizes the soil structure, leading to healthier root systems and larger blooms.
How to Measure Your Garden Bed
For rectangular beds, measure the length and width in feet. For circular beds, measure straight across the middle (the diameter). For irregular shapes, break the bed into smaller sections and use our calculator's "Multiple Areas" tab.
Bags vs. Bulk (Cubic Yards)
It takes 27 standard (1 cu. ft.) or 13.5 (2 cu. ft.) bags to equal one cubic yard. If you need more than 3 cubic yards, scheduling a bulk delivery is almost always cheaper. Bags are best for small touch-ups or tight backyard spaces.
Filling Raised Beds
When filling deep raised beds, consider using the Hügelkultur method or filling the bottom with logs, branches, and organic debris to save money on bulk topsoil. You generally only need 8 to 12 inches of high-quality topsoil at the surface for optimal growing.
Frequently Asked Questions
There are 27 bags (1 cubic foot bags) or 13.5 bags (2 cubic foot bags) in one cubic yard. If you are buying large 3 cubic foot bags, it takes 9 bags to equal one yard.
At a standard amendment depth of 3 inches, one cubic yard of topsoil covers exactly 108 square feet.
For amending most flower beds and gardens, a depth of 3 inches is ideal. If you are just applying a top-dressing to an existing lawn, 1 to 2 inches is sufficient. Raised beds may require 6 to 12 inches.
Bulk topsoil (sold by the cubic yard) is almost always cheaper per unit of volume than bagged soil. However, you must factor in delivery fees. Usually, if you need more than 3 cubic yards, bulk delivery is the most cost-effective route.
Topsoil is quite heavy. One cubic yard of topsoil typically weighs between 2,000 and 2,500 pounds (over 1 ton) depending on moisture content and the specific soil blend.
What Users Say
See how others are using our topsoil calculator for their landscaping projects.
Super quick and easy. Confirmed exactly how many bags I needed for my raised beds so much time saved at the hardware store!
I love using this for my client's gardens. The multiple areas tab is a fantastic feature when calculating complex yard layouts.
Nice design. The cost and weight estimation calculations were fun extra touches I wasn't expecting but really appreciated.
This was incredibly accurate! It calculated my cubic yardage exactly right for a bulk topsoil delivery order.
Perfect tool! Helped me figure out exactly how much topsoil I needed for my new lawn. Saved me from buying way too much.
Very straightforward. The fact that it calculates weight is a game-changer for knowing if my truck can handle the load.
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