Cut and Fill Calculator
Estimate earthwork cut volume, fill volume, net soil balance, soil swell, compaction shrinkage, import or export material, truckloads, excavation cost, fill placement cost, haul-off cost, and total grading budget for sitework, landscaping, pads, driveways, roads, and construction projects.
Calculate Cut and Fill
Your Cut and Fill Estimate
Formula used:
Practical recommendation:
Quick Formula Box
Cut cubic feet = area × cut depth in feet
Fill cubic feet = area × fill depth in feet
Cubic yards = cubic feet ÷ 27
Loose cut volume = bank cut volume × (1 + swell %)
Usable cut for fill = bank cut volume × usable cut % × (1 − shrinkage %)
Adjusted fill required = bank fill volume × (1 + extra fill allowance %)
Import needed = max(adjusted fill − usable compacted cut, 0)
Export needed = max(loose cut − cut used on site, 0)
Total cost = cut cost + fill placement + import cost + export cost + mobilization + tax
Cut and Fill Reference Table
| Term | Meaning | Typical Planning Range | Why It Matters | Common Mistake |
|---|---|---|---|---|
| Cut | Earth removed from high areas | Measured as bank cubic yards | Determines excavation effort and available onsite soil | Using loose truck volume as in-place cut volume |
| Fill | Earth added to low areas | Measured as compacted or in-place cubic yards | Determines how much soil must be placed and compacted | Ignoring shrinkage during compaction |
| Swell | Expansion of soil after excavation | About 10%–40% | Affects spoil piles, trucks, and haul-off | Assuming excavated soil keeps the same volume |
| Shrinkage | Volume loss when fill is compacted | About 8%–20% | Affects whether cut material is enough for fill | Assuming all cut soil can refill the same volume |
| Usable cut | Cut material suitable for fill | 50%–100% | Wet, organic, contaminated, or unsuitable soil may be rejected | Counting all excavated soil as structural fill |
| Import | Additional material brought to the site | Needed when fill exceeds usable cut | Affects material and delivery cost | Ordering too late after cut/fill imbalance appears |
| Export | Excess spoil hauled off site | Needed when cut exceeds onsite fill demand | Affects hauling, disposal, and truck scheduling | Forgetting loose spoil takes more truck space |
| Balanced site | Cut and fill are nearly equal after adjustments | Often within 5%–10% | Minimizes import/export cost | Calling a site balanced before swell and shrinkage are considered |
| Compacted fill | Fill placed and densified in lifts | Project-specific | Controls settlement and stability | Placing thick loose lifts without proper compaction |
| Average depth method | Area multiplied by average cut or fill depth | Best for quick planning | Fast estimate for simple grading | Using it for complex surfaces without a field allowance |
How to Use the Cut and Fill Calculator
Cut and Fill Calculator Guide
A cut and fill calculator estimates the amount of earth that must be removed from high areas and placed into low areas to reach a planned grade. Cut means excavation. Fill means adding material. In earthwork, the goal is often to balance the site so excavated material can be reused as fill, reducing import, export, hauling, and disposal costs. This calculator helps estimate that balance using project area, average cut depth, average fill depth, soil type, swell, shrinkage, usable cut percentage, and cost inputs.
Cut and fill calculations are common in site grading, building pads, driveways, roads, landscaping, drainage correction, parking areas, sports fields, retaining wall preparation, and foundation work. A simple calculation can be made with area multiplied by average depth, but real-world earthwork is affected by soil behavior. Excavated soil expands when loosened, compacted fill shrinks when densified, and not every cubic yard of cut material is suitable for reuse.
What This Cut and Fill Calculator Does
This tool calculates bank cut volume, bank fill volume, loose cut volume after swell, compacted usable cut volume after shrinkage, adjusted fill requirement, import fill needed, export spoil volume, truckloads, estimated tons, excavation cost, fill placement cost, import material cost, export cost, delivery or mobilization, tax, and total estimated project cost.
The calculator is built for fast planning. The required inputs are project area, average cut depth, average fill depth, and soil type. Advanced controls are available for more detailed estimating, including field accuracy factor, usable cut percentage, extra fill allowance, cost rates, truck capacity, and tax. This keeps the default experience simple for homeowners while still useful for contractors and sitework estimators.
Why Cut and Fill Estimating Matters
Earthwork can become expensive when soil balance is misunderstood. If a site has more fill demand than usable cut material, imported fill must be purchased and delivered. If a site has more cut than fill demand, excess soil may need to be stockpiled or hauled away. Both situations affect budget, schedule, truck access, and equipment planning.
Soil volume changes also matter. A cubic yard of in-place clay does not behave the same as a cubic yard of loose excavated clay or compacted fill. Excavated soil may swell by 20% or more. When placed and compacted, the same soil may shrink. This is why a cut volume and a fill volume cannot always be compared one-to-one without adjustment.
Cut and Fill Formula Explained
The simplest area-based formula is:
Cut cubic feet = area × cut depth in feet
Fill cubic feet = area × fill depth in feet
Since depth is often measured in inches, the calculator converts inches to feet first:
Depth in feet = depth in inches ÷ 12
Then cubic feet are converted to cubic yards:
Cubic yards = cubic feet ÷ 27
For example, a 2,000 square foot site with an average cut of 8 inches has:
2,000 × (8 ÷ 12) = 1,333.33 cubic feet
1,333.33 ÷ 27 = 49.38 cubic yards of bank cut
If average fill depth is 4 inches:
2,000 × (4 ÷ 12) = 666.67 cubic feet
666.67 ÷ 27 = 24.69 cubic yards of bank fill
The calculator then adjusts for swell, shrinkage, usable cut, and fill allowance to estimate whether the job needs imported fill or has excess export material.
Understanding Swell and Shrinkage
Swell is the expansion of soil after it is excavated. Soil that was compact and undisturbed in the ground becomes loose when dug. This increases its volume. Sandy soils may swell less, while clay, wet soil, and rocky excavation may swell more. Swell affects spoil piles, truckloads, haul-off, and stockpile space.
Shrinkage is the reduction in volume when material is placed and compacted as fill. Compacted fill usually occupies less volume than loose fill. This matters when deciding whether cut material is enough to satisfy fill demand. A site may appear balanced using raw bank volumes, but after compaction and unsuitable material are considered, it may still need imported fill.
Cut Material Quality
Not all cut material can be reused as fill. Organic topsoil, wet clay, debris, contaminated soil, oversized rock, and soft unsuitable material may need to be separated, dried, amended, or removed. Structural areas often require approved compactable fill rather than random excavated soil. This calculator includes a usable cut percentage to account for material that cannot be reused effectively.
For landscape grading, more onsite material may be reusable. For building pads, roadways, slabs, and foundations, soil quality and compaction standards are more important. If the project has engineering specifications, those should control the final cut and fill plan.
Practical Applications
Common Residential Uses
Common Contractor Uses
Cost Factors in Cut and Fill Work
Cut and fill costs depend on excavation difficulty, equipment, access, haul distance, disposal fees, import fill price, compaction requirements, moisture conditioning, grading accuracy, and site conditions. A small yard project may only involve a skid steer and a few truckloads. A larger pad or roadway may require survey control, excavators, dozers, compactors, dump trucks, testing, and engineered fill.
This calculator separates excavation cost, fill placement cost, import cost, export cost, and mobilization so the estimate is easier to understand. If you do not know exact rates, use realistic local quotes when available. For large projects, final quantities should be based on a survey, grading plan, or takeoff from design surfaces.
Common Mistakes to Avoid
A common mistake is using raw cut and raw fill volumes without considering swell and shrinkage. Another mistake is assuming all excavated soil is usable fill. Wet, organic, contaminated, or debris-filled soil may not be acceptable. Sites with poor access can also cost more than the volume suggests because trucks and equipment may not move efficiently.
Another issue is averaging depth incorrectly. If half the site needs 12 inches of cut and the other half needs no cut, the average cut depth is not 12 inches across the whole site. It is 6 inches across the whole area. For mixed zones, calculate each zone separately or use weighted averages.
Expert Recommendations
Use actual survey or laser-level measurements whenever possible. Divide complex sites into smaller zones and calculate each zone separately. Add a field allowance for irregular surfaces, rough excavation, settlement, and grading tolerance. For structural fills, confirm compaction requirements, moisture conditioning, lift thickness, and acceptable material types.
Plan stockpile space before excavation begins. If cut material will be reused, keep unsuitable topsoil or organic material separate from structural fill. If excess soil must leave the site, confirm disposal location, truck routes, and loading access. If imported fill is required, confirm material type, density, moisture condition, delivery minimums, and compaction behavior.
Conclusion
This cut and fill calculator estimates earthwork volumes, soil balance, import needs, export spoil, truckloads, tons, and cost using practical sitework assumptions. It is useful for early grading plans, landscape leveling, pads, driveways, roads, and general construction planning. Final earthwork quantities should be confirmed using field measurements, survey data, soil testing, engineering specifications, and local project requirements.