Yards Of Soil Calculator
When planning a garden, lawn, flower bed, raised planting area, or landscaping project, one of the most important questions is: How much soil do I need? Buying too little can leave your project unfinished, while ordering too much can waste money and leave you with a large pile of unused material.
Yards Of Soil Calculator
Area: sq ft
Soil Volume: cubic ft
Soil Needed: cubic yards
Recommended Order: cubic yards
The Yards of Soil Calculator makes this calculation much easier. It determines the area you want to cover, calculates the total soil volume in cubic feet, converts that volume into cubic yards, and provides a recommended order quantity rounded up to the nearest tenth of a cubic yard.
All you need to provide is the length of the area in feet, width in feet, and desired soil depth in inches. The calculator then handles the volume conversion for you.
Whether you are adding topsoil to a lawn, filling a garden bed, improving planting soil, or planning a landscaping project, this tool can provide a quick estimate before you purchase bulk soil.
What Is a Yards of Soil Calculator?
A Yards of Soil Calculator is a tool used to determine the amount of soil required to cover a specific area at a chosen depth.
Soil and other landscaping materials are commonly sold by the cubic yard, rather than by square foot or cubic foot. This means you need to calculate three-dimensional volume before ordering material.
For example, knowing that your garden covers 200 square feet does not tell you how much soil to buy. You also need to know whether you want to spread the soil 2 inches, 4 inches, 6 inches, or another depth.
The basic calculation is:
Length × Width × Depth = Soil Volume
Because the calculator accepts depth in inches, the depth is first converted to feet. The resulting cubic-foot volume is then divided by 27, because one cubic yard contains 27 cubic feet.
The basic formulas are:
Area:
Length × Width = Area in square feet
Depth in feet:
Depth in inches ÷ 12 = Depth in feet
Soil volume:
Area × Depth in feet = Cubic feet
Cubic yards:
Cubic feet ÷ 27 = Cubic yards
The calculator also provides a recommended order quantity by rounding the calculated amount upward to the nearest tenth of a cubic yard.
How to Use the Yards of Soil Calculator
Using the calculator requires only three measurements.
Step 1: Enter the Area Length
Enter the length of the area you want to cover in feet.
For example, if a rectangular garden bed is 20 feet long, enter 20.
Try to measure the actual area as accurately as possible. Small measurement differences can affect the amount of soil required, especially for large projects.
Step 2: Enter the Area Width
Enter the width of the area in feet.
For example, if the garden bed is 10 feet wide, enter 10.
The calculator multiplies length by width to determine the total surface area.
Step 3: Enter Soil Depth
Enter the desired soil depth in inches.
For example, if you want 3 inches of soil, enter 3.
This field is important because soil requirements increase as depth increases. A 100-square-foot area covered with 6 inches of soil requires twice as much soil as the same area covered with 3 inches.
Step 4: Click Calculate
Select the Calculate button.
The calculator will display four results:
- Area in square feet
- Soil Volume in cubic feet
- Soil Needed in cubic yards
- Recommended Order in cubic yards
These results give you both the mathematical requirement and a practical quantity to consider when purchasing soil.
Understanding the Calculator Results
The results section provides several useful measurements.
Area in Square Feet
The area is calculated by multiplying length by width.
For a 20-foot by 10-foot area:
20 × 10 = 200 square feet
This tells you the total surface area that will receive soil.
Soil Volume in Cubic Feet
The calculator converts the soil depth from inches to feet and multiplies it by the area.
For example, a 3-inch depth is:
3 ÷ 12 = 0.25 feet
For 200 square feet:
200 × 0.25 = 50 cubic feet
Therefore, the project requires approximately 50 cubic feet of soil.
Soil Needed in Cubic Yards
Since bulk soil is frequently sold by the cubic yard, the cubic-foot volume is divided by 27:
50 ÷ 27 = 1.85 cubic yards
The calculator displays this result to two decimal places.
Recommended Order
The calculator also provides a recommended order rounded upward to the nearest tenth.
For 1.85 cubic yards, the recommended order is:
1.9 cubic yards
This can make the result easier to use when planning a material order.
Yards of Soil Calculator Example
Suppose you are preparing a rectangular garden bed that measures:
- Length: 20 feet
- Width: 10 feet
- Soil depth: 3 inches
First, calculate the surface area:
20 × 10 = 200 square feet
Next, convert the soil depth into feet:
3 ÷ 12 = 0.25 feet
Now calculate the volume:
200 × 0.25 = 50 cubic feet
Finally, convert cubic feet to cubic yards:
50 ÷ 27 = 1.85 cubic yards
The calculator would therefore show approximately:
- Area: 200.00 sq ft
- Soil Volume: 50.00 cubic ft
- Soil Needed: 1.85 cubic yards
- Recommended Order: 1.9 cubic yards
This provides a quick estimate of the amount of soil needed for the project.
Another Practical Example: Lawn Topsoil
Imagine you want to add topsoil to a lawn section measuring 30 feet by 15 feet and want an average depth of 2 inches.
The area is:
30 × 15 = 450 square feet
Convert the depth:
2 ÷ 12 = 0.1667 feet
The approximate soil volume is:
450 × 0.1667 ≈ 75 cubic feet
Convert to cubic yards:
75 ÷ 27 ≈ 2.78 cubic yards
The calculator would recommend approximately 2.8 cubic yards.
This type of calculation can help you estimate the quantity before contacting a landscaping supplier or arranging delivery.
Why Soil Depth Matters
Soil depth has a major impact on the total amount of material required.
Consider a 500-square-foot area:
| Soil Depth | Approximate Soil Needed |
|---|---|
| 1 inch | 1.54 cubic yards |
| 2 inches | 3.09 cubic yards |
| 3 inches | 4.63 cubic yards |
| 4 inches | 6.17 cubic yards |
| 6 inches | 9.26 cubic yards |
| 12 inches | 18.52 cubic yards |
These figures demonstrate why selecting the correct depth is essential.
If you double the depth while keeping the length and width the same, you approximately double the soil volume.
Common Uses for a Soil Volume Calculator
A cubic-yard soil calculator can be useful for many residential and landscaping projects.
Garden Beds
Gardeners often need to add soil when creating a new planting bed or improving an existing one. Calculating the required volume can help prevent unnecessary trips to purchase additional material.
Raised Beds
Raised garden beds require a significant amount of growing medium because the soil depth is usually greater than a thin lawn application.
Measure the interior length and width of the bed and determine the desired filling depth.
Lawn Improvement
Topsoil can be used when establishing or renovating lawns. If you are spreading a relatively thin layer over a large lawn, even a small change in depth can significantly affect the total quantity.
Landscaping
Landscaping projects may involve filling low areas, creating planting zones, preparing new beds, or adding soil around plants.
Vegetable Gardens
Vegetable gardens can require carefully planned soil depths, particularly when preparing new beds from scratch. The calculator can help estimate the volume required before purchasing soil.
Construction and Property Projects
Soil volume calculations can also be useful for general grading, filling, and other projects where a known area needs to be covered to a particular depth.
Tips for Ordering Soil
Calculating the required volume is only part of the planning process. Consider these tips before placing your order.
Measure More Than Once
Double-check the length and width before calculating. A small measurement error can result in a noticeable difference in material requirements.
Use the Average Depth
If your area is uneven, measure the depth at several locations and use a reasonable average rather than relying on one measurement.
Consider Settling
Loose soil can settle after installation, watering, rain, and natural compaction. Depending on the material and project, the final soil depth may be somewhat lower than the initial loose depth.
Know What Type of Soil You Need
The calculator estimates volume, not soil type. Topsoil, garden soil, compost blends, fill soil, and planting mixes have different characteristics and are suited to different purposes.
Check Supplier Measurements
Bulk-material suppliers may sell soil by cubic yard, half-yard, bag, or another unit. Confirm how the supplier defines and sells the material before ordering.
Account for Irregular Areas
The calculator is designed around length, width, and depth. For an irregular area, divide the space into smaller rectangles or other manageable sections, calculate each section separately, and add the results together.
Benefits of Using the Yards of Soil Calculator
There are several advantages to calculating your soil requirements before shopping.
Saves time: You can estimate your material needs quickly without performing multiple manual conversions.
Reduces guesswork: The calculator provides a numerical estimate based on your measurements.
Helps with budgeting: Knowing the approximate number of cubic yards can make it easier to estimate material and delivery costs.
Supports project planning: You can determine whether the quantity is manageable for your project before ordering.
Handles unit conversion: Depth is entered in inches while the final requirement is provided in cubic yards.
Useful for different projects: The same calculation can be used for garden beds, lawns, landscaping, raised beds, and other rectangular areas.
How Many Cubic Feet Are in a Cubic Yard?
There are 27 cubic feet in one cubic yard.
The relationship comes from the dimensions of a cubic yard:
1 yard × 1 yard × 1 yard = 1 cubic yard
Since one yard equals three feet:
3 × 3 × 3 = 27 cubic feet
Therefore:
1 cubic yard = 27 cubic feet
This is why the calculator divides the calculated cubic-foot volume by 27 to determine the number of cubic yards.
What If the Area Is Not a Perfect Rectangle?
Many real-world spaces are irregular. A single length and width measurement may not accurately represent such an area.
One practical approach is to divide the space into several smaller rectangular sections.
For example, if a garden consists of two rectangular areas, calculate the soil requirement for each section separately:
Section A + Section B = Total Soil Requirement
You can repeat this process for three or more sections if necessary.
For circular or highly irregular areas, a specialized volume calculation may be more appropriate.
Is the Recommended Order the Exact Amount?
The recommended order is a practical rounded quantity, not a guarantee that it will perfectly match the physical amount needed at the site.
The calculator rounds the calculated cubic-yard requirement up to the nearest tenth of a cubic yard. This makes the figure easier to use when planning an order.
Actual soil needs can vary because of uneven ground, measurement errors, settling, compaction, and material characteristics.
For important landscaping or construction projects, use the calculator as an estimate and confirm quantities with your soil supplier or project professional.
Frequently Asked Questions
1. What does the Yards of Soil Calculator calculate?
It calculates the area, soil volume in cubic feet, soil requirement in cubic yards, and a recommended order quantity based on length, width, and depth.
2. What measurements do I need?
You need the length in feet, width in feet, and soil depth in inches.
3. Why is soil depth entered in inches?
Soil depth for landscaping is commonly described in inches. The calculator converts that measurement into feet before calculating cubic volume.
4. How do I calculate cubic yards of soil manually?
Multiply length by width to get square feet, convert depth from inches to feet, multiply area by depth to get cubic feet, and divide the result by 27.
5. How much soil do I need for 100 square feet?
The quantity depends on the desired depth. For example, 100 square feet at 3 inches deep requires approximately 0.93 cubic yards.
6. How many cubic feet are in one cubic yard?
One cubic yard contains 27 cubic feet.
7. Does deeper soil require more cubic yards?
Yes. Soil volume increases directly with depth. Doubling the depth approximately doubles the amount of soil required.
8. Can I use this calculator for topsoil?
Yes. The calculator can estimate the volume of topsoil needed when you know the area dimensions and desired application depth.
9. Can I use it for a raised garden bed?
Yes. Measure the inside length and width of the raised bed and enter the average depth of soil you want to add.
10. Can I calculate soil for an irregular garden?
Yes, but you should divide the irregular garden into smaller measurable sections and calculate each section separately.
11. Does the calculator include soil settling?
No. It calculates the volume based on the measurements you provide. Settling and compaction can affect the final installed depth.
12. Why does the calculator show both soil needed and recommended order?
“Soil Needed” shows the calculated cubic-yard requirement to two decimal places. “Recommended Order” rounds the quantity upward to the nearest tenth for easier ordering.
13. Can I use this calculator for landscaping projects?
Yes. It can be used for many projects involving rectangular areas, including planting beds, lawn applications, landscaping areas, and soil filling.
14. What if my area has different soil depths?
Use an average depth for a quick estimate, or divide the project into sections with different depths and calculate each section separately.
15. Is the calculated amount an exact purchase quantity?
It is an estimate based on the measurements entered. Actual requirements can vary because of uneven ground, settling, compaction, and measurement differences, so consider confirming the quantity with your supplier.
Final Thoughts
Calculating soil volume before starting a landscaping or gardening project can make material planning much easier. The Yards of Soil Calculator provides a straightforward way to turn three simple measurements—length, width, and depth—into useful soil-volume estimates.
By entering the area length in feet, area width in feet, and soil depth in inches, you can quickly determine the square footage, cubic-foot volume, cubic-yard requirement, and a rounded recommended order quantity.
For the most reliable estimate, take accurate measurements, use a realistic average depth, account for irregular sections separately, and remember that soil may settle after installation. With these considerations in mind, a cubic-yard calculation can give you a practical starting point for ordering soil and planning your project.