Fill Dirt Calculator – Calculate Cubic Yards & Cost

Planning to level your yard, fill in low spots, or raise the ground around your property? Before ordering materials, it’s important to determine how much fill dirt your project will require. Ordering too little can delay the work, while ordering too much may leave you with excess soil that needs to be moved, stored, or disposed of.

The Fill Dirt Calculator helps you estimate how much soil you need based on the length, width, and depth of the area you plan to fill. Results can be calculated in cubic feet or cubic yards, making it easier to order the right amount of material and plan your dirt delivery with confidence.

Whether you’re leveling a backyard, preparing a building site, or filling uneven areas of your lawn, accurate measurements can make the job easier. Knowing how much fill dirt your project requires can save time, reduce material waste, and help you avoid unnecessary expenses.

How to Use a Fill Dirt Calculator

To estimate how much fill dirt your project requires, measure the area you need to fill and decide how deep the new layer of soil should be. Accurate measurements help you calculate the square footage and estimate the amount of material needed for your project.

For a rectangular area, you’ll need three measurements:

• Length: The distance from one end of the area to the other, measured in feet.
• Width: The distance across the area, measured in feet.
• Fill depth: How thick you want the new layer of soil to be, measured in inches or feet.

Use the same unit of measurement for all three dimensions. If you measure the length and width in feet but the depth in inches, convert the depth to feet by dividing by 12 before calculating the volume.

For example, suppose you need to fill a rectangular section of your backyard that is 20 feet long and 15 feet wide. You want to add 6 inches of fill dirt.

First, convert the depth to feet:

6 inches ÷ 12 = 0.5 feet

Next, calculate the volume in cubic feet:

20 × 15 × 0.5 = 150 cubic feet

To convert cubic feet to cubic yards, divide the result by 27 because one cubic yard contains 27 cubic feet:

150 ÷ 27 = 5.56 cubic yards

Your project will require approximately 5.56 cubic yards of fill dirt before accounting for any additional material needed for compaction, settling, or material loss.

The final amount you should order may vary depending on how the soil is placed and compacted. For landscaping projects that involve garden soil or filling low spots, a soil calculator can also help estimate the material required.

Use the Fill Dirt Calculator to check your estimated cubic yards and determine how much material to order for your project. This calculation can help you plan your soil delivery and compare supplier prices before placing an order.

How to Calculate Fill Dirt in Cubic Yards

In the United States, fill dirt is commonly sold by the cubic yard. To estimate how much fill dirt your project needs, measure the length and width of the area in feet and determine the average fill depth. These measurements help you calculate the area and the volume of dirt required, making it easier to plan material quantities and compare supplier quotes.

For uneven ground, divide the area into smaller sections, calculate the fill dirt needed for each section, and add the results together. This approach can help you get a more accurate estimate before ordering materials.

Fill Dirt Calculation Formula

For a rectangular area, use the following formula to calculate the amount of fill dirt needed:

Volume in Cubic Feet = Length × Width × Depth

Make sure all three measurements are in feet.

To convert the volume from cubic feet to cubic yards, divide the result by 27:

Cubic Yards = (Length × Width × Depth) ÷ 27

The number 27 comes from the fact that one cubic yard contains 27 cubic feet. This conversion is useful when calculating feet to cubic yards to determine how much fill dirt to order.

If your length and width measurements are in feet but your fill depth is in inches, use this formula instead:

Cubic Yards = Length × Width × (Depth in Inches ÷ 12) ÷ 27

For example, suppose you’re filling an area that is 24 feet long, 18 feet wide, and 6 inches deep. The calculation would be:

24 × 18 × (6 ÷ 12) ÷ 27 = 8 cubic yards

This result represents the estimated volume of fill dirt before making any adjustments for compaction or other project-specific conditions. A cubic yards calculator can simplify these calculations and help you estimate the material needed for landscaping and ground-leveling projects.

Fill Dirt Calculation Examples

Let’s look at a few common project sizes to see how much fill dirt you may need. These estimates assume a flat, rectangular area with a consistent fill depth throughout.

These figures represent the calculated geometric volume, not a guarantee of the amount that will be delivered or remain after compaction. Before placing an order, consider your site’s actual conditions, soil compaction, and any additional material your project may require.

How Much Fill Dirt Does Your Project Need?

The amount of fill dirt required depends on the size of the area, the desired fill depth, and whether the soil needs to be compacted or raised to a specific finished elevation.

Filling Low Spots in a Yard

To fill a low spot in your lawn, measure the approximate length and width of the affected area and estimate its average depth.

If the depression has an irregular shape, divide it into smaller rectangular sections. Calculate the fill dirt volume for each section separately, then add the results together to estimate the total amount needed.

Avoid measuring only the deepest point. If most of the surrounding area is much shallower, using the deepest measurement across the entire space can lead to an inaccurate estimate.

Leveling a Backyard

Leveling a yard often involves filling several low areas rather than spreading an even layer of soil across the entire lawn.

Walk around your property to identify where additional soil is needed. Measure each area separately and estimate the average fill depth to calculate the required volume.

If you’re raising the entire yard, make sure the planned finished grade allows for proper drainage. Water should generally flow away from your home’s foundation rather than collect near the building.

Raising Ground Around a Building

Projects near a foundation require extra care. Adding soil against a building without considering existing grading, siding clearance, drainage, and moisture protection can create problems.

Check local building requirements and manufacturer recommendations for the required clearance between the soil and exterior materials. If the project involves a significant change in ground elevation, consult a qualified grading professional before proceeding.

Preparing a Driveway or Building Site

Driveways and construction sites may need deeper fill layers than typical landscaping projects. The required depth depends on the existing soil, expected loads, drainage, and the type of surface being installed.

For these projects, calculating the fill dirt volume is only one part of the job. The soil may need to be added in layers and compacted properly to create a stable base.

Depending on the project, crushed stone may also be needed for drainage or base preparation. Our Crushed Stone Calculator can help you estimate how much stone you’ll need.

If you’re planning a concrete slab, use our Concrete Slab Cost Calculator to estimate material and labor costs.

For projects that require engineered fill or soil testing, follow the project specifications rather than relying on a general estimate.

How Deep Should Fill Dirt Be?

There is no single fill depth that works for every project. The right depth depends on how much you need to raise the ground and how the finished area will be used.

For a shallow depression in a lawn, adding a few inches of fill dirt may be enough. Raising a low section of your yard may require a deeper layer, while driveways and building pads can need considerably more material and careful soil compaction.

Before estimating the amount of fill dirt you need, determine the difference between the existing ground elevation and the desired finished grade.

For example, if one section of your yard sits 5 inches below the planned finished grade, the estimated fill depth for that area is 5 inches. If the surrounding ground varies in elevation, calculate the average depth or divide the area into smaller sections for a more accurate estimate.

For larger grading projects, a land survey or precise elevation measurements can provide a more reliable estimate than visual judgment alone.

Does Fill Dirt Shrink After Compaction?

Fill dirt can occupy less space after it is placed and compacted because compaction reduces the air gaps between soil particles. The amount of volume reduction depends on the soil type, moisture content, initial condition, and compaction method.

As a result, the volume calculated from your finished project dimensions may differ from the loose volume delivered by a supplier.

For example, suppose your project requires 12 cubic yards of compacted fill dirt. You may need to order more than 12 cubic yards of loose soil to achieve the desired finished volume. The additional amount depends on the soil characteristics and the required final density.

You shouldn’t apply the same extra percentage to every project. A fill dirt supplier or qualified earthwork contractor can help estimate the appropriate allowance for the specific material being used.

It’s also important to distinguish compaction from general material waste. Compaction reduces the volume occupied by the soil, while waste can include spillage, uneven placement, and excess material left over after grading.

For a small landscaping project, allowing for a modest amount of extra material may be practical. For engineered fill or structural work, follow the project’s specifications to determine the required quantity and compaction standards.

How Much Does a Cubic Yard of Fill Dirt Weigh?

The weight of a cubic yard of fill dirt varies depending on soil composition, moisture content, density, and how loosely or tightly the material is packed.

Dry, sandy soil may weigh considerably less than wet, clay-rich soil. As a result, two suppliers can deliver the same volume of fill dirt while providing different total weights.

For planning purposes, ask your supplier for the estimated weight per cubic yard of the specific fill dirt you intend to order.

Once you have that figure, use the following formula:

Estimated Tons = Cubic Yards × Tons per Cubic Yard

For example, if your supplier estimates that the material weighs approximately 1.5 tons per cubic yard, the calculation for 8 cubic yards would be:

8 cubic yards × 1.5 tons per cubic yard = 12 tons

This is an illustrative calculation, not a universal fill dirt weight conversion. For a more reliable estimate, use the supplier’s stated weight or density for the actual material.

Weight matters when comparing prices, checking truck capacity, and arranging delivery. A truck may reach its legal payload limit before its truck bed reaches its full volume capacity.

How Many Truckloads of Fill Dirt Do You Need?

The number of truckloads required depends on the total volume of fill dirt your project needs and how much material each truck can legally and practically carry.

Use this formula to estimate the number of loads:

Number of Truckloads = Total Cubic Yards Needed ÷ Cubic Yards per Load

If your supplier does not offer partial loads, round the result up to the next whole number.

For example, suppose your project requires 24 cubic yards of fill dirt, and your supplier can deliver 8 cubic yards per load:

24 ÷ 8 = 3 truckloads

In this case, you would need three loads, assuming your volume estimate already accounts for the amount of material required at the site.

Truck capacity varies depending on the vehicle, material weight, road restrictions, and delivery conditions. Ask your supplier how many cubic yards each load can carry rather than relying only on the truck bed’s advertised volume.

You should also check whether the delivery truck can access your property. Narrow driveways, low-hanging branches, soft ground, and limited turning space can affect where the driver can safely unload the fill dirt.

How to Estimate Fill Dirt for Uneven Ground

Calculating fill dirt for uneven ground requires more care than measuring a flat, rectangular area. The main challenge is estimating the average fill depth needed across the entire site.

A practical approach is to divide the area into smaller sections and calculate each one separately.

1. Measure the length and width of each section.
2. Estimate the average fill depth required for that section.
3. Convert all measurements to feet.
4. Calculate the volume in cubic feet for each section.
5. Divide each result by 27 to convert cubic feet into cubic yards.
6. Add the cubic yard estimates together to determine the total volume.

For example, suppose you need to level two rectangular sections of your backyard:

• Section A: 15 feet × 12 feet, with an average fill depth of 6 inches.
• Section B: 12 feet × 10 feet, with an average fill depth of 9 inches.

For Section A:

15 × 12 × (6 ÷ 12) ÷ 27 = 1.67 cubic yards

For Section B:

12 × 10 × (9 ÷ 12) ÷ 27 = 3.33 cubic yards

Total estimated volume:

1.67 + 3.33 = 5.00 cubic yards

The combined geometric estimate is approximately 5 cubic yards before making any necessary adjustments for compaction or material loss.

For sloped ground, estimating the average fill depth may work for preliminary planning when the terrain has a reasonably consistent profile. However, steep slopes, irregular terrain, or significant elevation changes may require a more detailed grading calculation or professional measurements.

Fill Dirt vs. Topsoil: Which One Should You Use?

Fill dirt and topsoil serve different purposes. Choosing the right material depends on whether you need to raise the ground, create a stable base, or support healthy plant growth.

Fill dirt is commonly used to raise ground levels, fill holes, and prepare areas for grading. Its suitability depends on its composition, cleanliness, and the requirements of the project. Not all fill dirt is appropriate for structural applications.

Topsoil is the upper layer of soil commonly used for lawns, gardens, and other planting areas. It generally contains more organic matter than ordinary fill dirt, making it a better growing medium for grass, flowers, and other plants. For garden soil projects, choosing a suitable topsoil helps provide better growing conditions for healthy plants.

For example, if you’re filling a deep depression before restoring your lawn, you may use suitable fill dirt to build up the lower portion of the area, followed by an appropriate layer of topsoil to support new grass or other plants. A soil calculator can help estimate the amount of soil needed for landscaping and planting projects.

However, these materials should not be treated as interchangeable. If your project involves foundations, retaining walls, drainage systems, or engineered fill, material selection should follow the applicable design specifications and site requirements.

Before placing an order, confirm exactly what your supplier means by “fill dirt.” Ask whether the material has been screened, whether it contains rocks or debris, and whether it’s suitable for your intended application.

How Much Does Fill Dirt Cost?

The cost of fill dirt depends on the material type, order size, delivery distance, local availability, and any special handling requirements at the job site.

Some suppliers quote prices per cubic yard, while others charge by the truckload or by weight. Delivery fees can also make a significant difference, especially for small orders or properties located far from the supplier.

To compare fill dirt quotes fairly, check the following details:

• Price per cubic yard or per truckload.
• Estimated quantity delivered in each load.
• Delivery or hauling charges.
• Minimum order requirements.
• Whether the material is screened or unscreened.
• Whether spreading or placement is included.
• Any additional grading or compaction fees.

If your supplier charges by the cubic yard, you can estimate the basic material cost using this formula:

Material Cost = Cubic Yards Ordered × Price per Cubic Yard

For example, if you order 12 cubic yards of fill dirt at $40 per cubic yard, the material subtotal will be $480 before delivery fees, taxes, or other additional charges.

How Much Does 10 Cubic Yards of Fill Dirt Cost?

The cost of 10 cubic yards of fill dirt depends on local prices, soil type, and delivery charges. For example, at $40 per cubic yard, 10 cubic yards would cost $400 before delivery fees and taxes.

Use this formula to estimate your material cost:

Material Cost = 10 Cubic Yards × Price per Cubic Yard

A fill dirt cost calculator can help you estimate expenses using your required quantity and your supplier’s price per cubic yard. Since prices vary by location and supplier, request a current quote that includes delivery before finalizing your project budget.

Common Mistakes When Estimating Fill Dirt

Even a straightforward volume calculation can produce an inaccurate estimate if measurements or project requirements are overlooked. Avoid these common mistakes when planning your fill dirt project.

Measuring Fill Depth Incorrectly

Depth is often measured in inches, while length and width are measured in feet. Convert the depth to feet before using the standard volume formula.

Forgetting this conversion can lead to a significant calculation error and cause you to order the wrong amount of material.

Assuming Every Area Is Rectangular

A yard or grading site may have curved edges, slopes, and uneven depressions. Divide complex areas into smaller sections or use an appropriate average-depth method to estimate the total volume more accurately.

Overlooking Soil Compaction

The calculated volume represents the geometric space that needs to be filled. It does not automatically account for the amount of loose material required to achieve a specific compacted result.

Check the appropriate material allowance for your soil type and project requirements before ordering.

Using a Fixed Weight Conversion

A cubic yard of fill dirt does not always weigh the same amount. Moisture content, soil composition, and density can all affect its weight. When converting cubic yards to tons, use the supplier’s estimate for the specific material.

Ordering Without Confirming Delivery Capacity

A supplier’s truck may not be able to carry the entire estimated quantity in a single load. Confirm the actual volume delivered per load, payload limits, and any minimum order requirements before scheduling delivery.

Choosing the Wrong Fill Material

Fill dirt intended for general grading may not meet the requirements for a building pad or another structural application. Likewise, fill dirt alone may not provide the growing conditions needed for a lawn or garden.

Match the material to the purpose of your project before placing an order. If the work involves structural support or engineered fill, follow the applicable project specifications.

FAQs

How can I figure out how much fill dirt my project requires?

Start by measuring the area’s length, width, and average fill depth in feet. Multiply these measurements to find the volume in cubic feet, then divide by 27 to convert it to cubic yards. Depending on the project, you may also need to account for compaction, settling, and material loss.

How much fill dirt is needed for a 10 × 10 area?

For a 10-foot-by-10-foot area with a fill depth of 6 inches, use the following calculation:

10 × 10 × 0.5 ÷ 27 = 1.85 cubic yards.

This result represents the basic volume required before making any additional adjustments.

How many cubic yards are in one ton of fill dirt?

The conversion depends on the soil’s density and moisture level, so there is no universal figure. Contact your fill dirt supplier to find out how many tons their material weighs per cubic yard. You can then use that information to convert your estimated volume into tons.

How much area will one cubic yard of fill dirt cover?

Coverage depends on how thickly the material is spread. One cubic yard contains 27 cubic feet and can cover approximately 108 square feet at a depth of 3 inches, before allowing for compaction or other adjustments.

Do I need extra fill dirt to account for compaction?

You may need additional material, depending on the soil type, moisture content, placement method, and required level of compaction. Ask your supplier or contractor how much extra to allow for your specific project rather than applying the same percentage to every estimate.

Is fill dirt suitable for leveling a lawn?

Fill dirt can help raise low areas and correct larger differences in ground level. However, the right material depends on the depth of the depression and the condition of the lawn. For minor leveling where healthy grass growth is important, topsoil or a suitable soil blend may be a better choice.

How does fill dirt differ from topsoil?

Fill dirt is typically used to build up ground levels, fill holes, and create a stable base. Topsoil contains material better suited to supporting grass, plants, and gardens. Because the two serve different purposes, select the soil type that best fits your project’s needs.

How do I estimate the number of fill dirt truckloads?

Divide the total cubic yards you need by the volume your supplier can deliver in one load. Round the result up to the next whole number if necessary. Before placing your order, verify the truck’s carrying capacity, weight limits, and any delivery restrictions.

Can a fill dirt calculator estimate material for a sloped yard?

Yes, but sloped or uneven ground requires more detailed measurements. Break the area into smaller sections and calculate the average fill depth for each section, then add the results together. For steep slopes, extensive grading, or work that requires precise elevations, consider getting professional measurements or a grading plan.

How reliable is a fill dirt calculator?

A Fill Dirt Calculator can estimate the required soil volume accurately when you enter correct measurements and use consistent units. However, the result may not reflect every site condition, including uneven terrain, soil density, compaction, drainage needs, or truck delivery limits. Use the estimate as a starting point and confirm any project-specific requirements before ordering materials.

Plan Your Fill Dirt Order with Confidence

Estimating fill dirt for your project doesn’t have to be complicated. Once you identify the area you need to fill and determine the required depth, you can calculate the volume in cubic yards and use that estimate to plan your material order.

For a more accurate estimate, take careful measurements, account for uneven ground, understand the difference between loose and compacted soil, and confirm your supplier’s delivery capacity. Choosing the right type of fill material is just as important as calculating the quantity you need.

Use the Fill Dirt Calculator to estimate the amount of material your project requires and plan your budget before placing an order. With accurate measurements and a clear understanding of your project’s requirements, you can help avoid unnecessary expenses and make more informed decisions when ordering fill dirt.