Soil Yardage Calculator

When planning a garden bed, lawn improvement project, raised planting area, or landscaping job, knowing how much soil to buy is important. Ordering too little can delay your project, while ordering too much can increase costs and leave you with excess material.

The Soil Yardage Calculator makes this process easier by estimating the amount of soil required from three simple measurements: length, width, and depth. Enter the length and width in feet and the desired soil depth in inches, and the calculator determines the area, soil volume in cubic feet, required soil in cubic yards, and a recommended order quantity.

Because bulk soil is commonly sold by the cubic yard, converting your measurements into cubic yards can save time and make purchasing much easier. This tool is useful for homeowners, gardeners, landscapers, contractors, and anyone preparing a soil delivery or pickup.

What Is a Soil Yardage Calculator?

A Soil Yardage Calculator is a measurement tool that estimates the quantity of soil needed to cover a particular area at a specified depth.

The calculator uses:

• Length: The area's length in feet
• Width: The area's width in feet
• Depth: The desired soil depth in inches

From these measurements, it calculates:

• Total area in square feet
• Soil volume in cubic feet
• Required soil in cubic yards
• Recommended order quantity

The calculation is especially useful because soil suppliers often price and deliver bulk materials by cubic yards rather than square feet or individual bags.

Why Calculate Soil Yardage?

Estimating soil quantity before purchasing has several practical benefits.

Avoid Buying Too Little Soil

If you underestimate your requirements, you may have to place another order or make an additional trip to the supplier. This can be inconvenient and may affect project timing.

Reduce Excess Material

Buying substantially more soil than necessary can increase your project cost. A good estimate helps you purchase a quantity closer to your actual requirements.

Plan Your Budget

Once you know the approximate cubic yards needed, you can contact local suppliers and calculate your expected material cost based on their price per cubic yard.

Improve Project Planning

Knowing the required volume can help you organize delivery, storage, wheelbarrow trips, equipment, labor, and installation.

How to Use the Soil Yardage Calculator

Using this calculator requires only three measurements.

Step 1: Measure the Length

Measure the length of the area where you want to add soil.

Enter the measurement in feet.

For example, if a garden bed is 20 feet long, enter 20.

Step 2: Measure the Width

Measure the width of the same area in feet.

For example, if the area is 10 feet wide, enter 10.

Step 3: Determine the Soil Depth

Decide how deep the soil should be and enter the depth in inches.

For example, a six-inch soil layer requires an entry of 6.

Depth is important because a large area with a shallow layer may require less soil than a smaller area with a very deep layer.

Step 4: Click Calculate

After entering all three measurements, select Calculate.

The calculator displays four results:

1. Area in square feet
2. Soil volume in cubic feet
3. Required soil in cubic yards
4. Recommended order quantity in cubic yards

Step 5: Review the Recommended Order

The recommended order provides a practical purchasing figure. It rounds the calculated cubic-yard requirement upward to the nearest tenth of a cubic yard.

For example, a calculated requirement of 2.34 cubic yards produces a recommended order of 2.4 cubic yards.

Soil Yardage Formula

Understanding the basic calculation can help you verify the result.

Calculate Area

For a rectangular or square area:

Area = Length × Width

If the length is 20 feet and the width is 10 feet:

20 × 10 = 200 square feet

Convert Depth to Feet

The calculator accepts depth in inches, but soil volume is calculated using feet.

Since:

12 inches = 1 foot

a six-inch depth equals:

6 ÷ 12 = 0.5 feet

Calculate Cubic Feet

Next:

Cubic Feet = Area × Depth in Feet

For a 200-square-foot area with a 0.5-foot depth:

200 × 0.5 = 100 cubic feet

Convert Cubic Feet to Cubic Yards

One cubic yard contains 27 cubic feet.

Therefore:

Cubic Yards = Cubic Feet ÷ 27

For 100 cubic feet:

100 ÷ 27 = 3.70 cubic yards

The calculator then rounds the recommended order upward to the nearest tenth.

Soil Yardage Calculator Example

Suppose you are preparing a garden area that is:

• Length: 20 feet
• Width: 10 feet
• Soil depth: 6 inches

First, calculate the area:

20 × 10 = 200 square feet

Next, convert six inches into feet:

6 ÷ 12 = 0.5 feet

Then calculate soil volume:

200 × 0.5 = 100 cubic feet

Finally, convert cubic feet into cubic yards:

100 ÷ 27 = 3.70 cubic yards

The calculator would show approximately:

Result	Amount
Area	200.00 sq ft
Soil Volume	100.00 cubic ft
Required Soil	3.70 cubic yards
Recommended Order	3.7 cubic yards

This gives you a useful estimate when discussing your soil requirements with a supplier.

Another Practical Example

Imagine you are creating a planting bed that is 30 feet long and 8 feet wide, with a desired soil depth of 4 inches.

The area is:

30 × 8 = 240 square feet

Convert the depth:

4 ÷ 12 = 0.3333 feet

Calculate cubic feet:

240 × 0.3333 ≈ 80 cubic feet

Convert to cubic yards:

80 ÷ 27 ≈ 2.96 cubic yards

The recommended order would be approximately 3.0 cubic yards.

This type of calculation is useful when planning landscaping projects where soil depth is measured in inches but bulk material is sold in cubic yards.

Common Uses for a Soil Yardage Calculator

A soil calculator can be useful for many residential and commercial projects.

Garden Beds

Gardeners can estimate how much topsoil, garden soil, or planting mix is needed to establish or refresh beds.

Lawn Installation

When preparing an area for new grass, calculating soil volume can help estimate the amount of material needed for grading or adding a new growing layer.

Raised Beds

Raised garden beds often require substantial quantities of soil. Calculating the internal dimensions and desired depth can provide a starting estimate.

Landscaping Projects

Landscaping projects may involve large planting areas, decorative beds, and other spaces that require imported soil.

Soil Replacement

If poor-quality soil needs to be removed and replaced, a volume calculation can help estimate how much replacement material is needed.

Grading and Leveling

Adding soil to low areas can require significant amounts of material. A yardage estimate can help with initial project planning.

Understanding Cubic Yards

A cubic yard is a three-dimensional measurement.

One cubic yard is equivalent to:

3 feet × 3 feet × 3 feet = 27 cubic feet

This is why cubic feet are divided by 27 when converting soil volume into cubic yards.

For example:

• 27 cubic feet = 1 cubic yard
• 54 cubic feet = 2 cubic yards
• 81 cubic feet = 3 cubic yards
• 108 cubic feet = 4 cubic yards

Remember that cubic yards measure volume, not surface area. The depth of the soil layer therefore has a major effect on the final result.

Choosing the Right Soil Depth

The correct depth depends on the type of project.

A relatively shallow layer may be suitable for some lawn preparation or soil top-dressing applications, while garden beds and certain planting projects may require considerably more depth.

Instead of choosing a depth simply because it is convenient, consider:

• What plants will be grown
• Existing soil conditions
• Rooting requirements
• Drainage
• The intended use of the area
• Recommendations for the particular landscape application

If the project has specific horticultural requirements, follow appropriate gardening or landscaping guidance rather than relying solely on a volume calculation.

Soil Type Matters

The calculator estimates volume, not soil weight.

Different materials can have very different weights per cubic yard. Topsoil, compost, garden soil, sand, mulch, and blended planting materials can all vary in density.

For this reason, the calculator should not be used to estimate the weight of the material unless you also have reliable density information from your supplier.

When ordering soil, ask the supplier about:

• Material type
• Price per cubic yard
• Minimum delivery quantity
• Delivery charges
• Estimated weight
• Whether the material is screened
• Moisture content or typical variation
• Recommended application depth

How Much Extra Soil Should You Order?

The exact amount of extra material required depends on the project.

The calculator provides a recommended order quantity by rounding the calculated cubic-yard requirement upward to the nearest tenth. This makes the result convenient for purchasing, but it does not automatically account for every real-world condition.

Soil can settle after placement, and actual ground conditions may differ from your measurements. Uneven surfaces can also make precise calculations difficult.

For important projects, compare the calculator's estimate with the supplier's recommendations and consider the expected settling and site conditions.

Tips for Measuring Your Project Accurately

Accurate measurements produce better estimates.

Measure Multiple Points

If an area is not perfectly rectangular, measure different sections separately. Divide the project into simple shapes and calculate each section individually.

Measure Depth Carefully

Do not estimate soil depth based only on appearance. Use a ruler or measuring tape to determine the intended depth.

Keep Units Consistent

This calculator expects length and width in feet and depth in inches. Make sure your measurements are entered using those units.

Break Irregular Areas Into Sections

For L-shaped or irregular spaces, divide the area into rectangles. Calculate each rectangle separately and add the results together.

Check Supplier Quantities

Suppliers may sell soil in specific increments. If your calculation is 3.7 cubic yards, ask the supplier whether they can deliver exactly that amount or whether their delivery system uses a different increment.

Benefits of Using This Soil Calculator

The tool provides several useful advantages:

• Simple inputs: Only length, width, and depth are required.
• Fast calculations: Results are generated immediately.
• Multiple measurements: It provides area, cubic feet, cubic yards, and a recommended order.
• Easy planning: Results can be used when requesting supplier quotes.
• Reduced guesswork: It replaces rough volume estimates with a mathematical calculation.
• Useful for many projects: It can be applied to gardens, landscaping, lawn preparation, and other soil projects.

Limitations to Keep in Mind

A soil yardage calculation is an estimate based on the measurements provided. It does not inspect the actual project area.

The calculator assumes a straightforward rectangular area and uniform soil depth. Sloped ground, irregular shapes, existing soil, settling, compaction, and changes in depth can affect actual material requirements.

For large commercial or highly technical projects, professional site measurements may be appropriate.

Soil Yardage vs. Soil Weight

It is important not to confuse volume and weight.

Cubic yards measure how much space the soil occupies.

Pounds or tons measure how heavy the soil is.

Two materials that occupy one cubic yard can have very different weights. Moisture can also substantially change the weight of soil.

Therefore, use cubic-yard calculations to estimate volume and ask your supplier for weight information when arranging transportation or determining vehicle capacity.

Frequently Asked Questions

1. What does a Soil Yardage Calculator calculate?

It estimates the area, soil volume in cubic feet, required soil in cubic yards, and a recommended order quantity based on length, width, and depth.

2. What measurements does the calculator require?

You need the area's length in feet, width in feet, and desired soil depth in inches.

3. Why is soil depth entered in inches?

Soil depth is commonly measured in inches for landscaping and gardening projects. The calculator converts that depth into feet for volume calculations.

4. How many cubic feet are in one cubic yard?

There are 27 cubic feet in one cubic yard.

5. How do I calculate cubic yards of soil?

Multiply length by width to determine area, multiply the area by depth in feet to find cubic feet, and divide the result by 27 to convert it into cubic yards.

6. Can I use this calculator for topsoil?

Yes. The calculator can estimate the volume of topsoil required for a measured area.

7. Can I use it for garden beds?

Yes. Enter the dimensions of the garden bed and the desired soil depth to estimate the required volume.

8. Does the calculator calculate soil weight?

No. It calculates soil volume. Soil weight depends on the material's density and moisture content.

9. What if my area is irregularly shaped?

Divide the area into smaller rectangles or other simple sections, calculate each section separately, and add the resulting volumes together.

10. Why does soil depth affect the result so much?

Soil volume depends on three dimensions. Increasing depth increases the amount of material required even when the length and width remain unchanged.

11. What does recommended order mean?

The recommended order is the calculated cubic-yard requirement rounded upward to the nearest tenth of a cubic yard.

12. Should I order exactly the amount calculated?

The calculation is an estimate. Actual requirements can vary because of uneven ground, measurement differences, settling, and site conditions. Discuss the quantity with your supplier for major projects.

13. Can I use the calculator for landscaping?

Yes. It can be useful for estimating soil requirements for many landscaping applications.

14. Does one cubic yard always weigh the same?

No. Weight varies according to material type, density, moisture, and other conditions. One cubic yard is a volume measurement, not a fixed weight.

15. Is this calculator useful for large projects?

It can provide a preliminary volume estimate. For large, complex, or professionally engineered projects, more detailed measurements and professional quantity estimates may be appropriate.

Final Thoughts

The Soil Yardage Calculator provides a convenient way to estimate how much soil a project requires before purchasing bulk material. By entering the length, width, and depth, you can quickly determine the area's square footage, soil volume in cubic feet, required cubic yards, and a practical recommended order quantity.

Whether you're preparing a garden bed, improving a lawn, filling a planting area, or planning a landscaping project, calculating soil volume beforehand can make material planning much easier. Always double-check your measurements, use the correct depth, and confirm ordering quantities with your local soil supplier, particularly when working on a large project.