Calculate cut and fill volumes for site grading. Enter existing and proposed elevations to balance earthwork and minimize hauling costs.
Cut and fill is the foundation of site grading — removing earth from high areas (cut) and placing it in low areas (fill) to create a level building pad, road, or designed slope. The goal is to balance cut and fill volumes so that all excavated material is reused on-site, eliminating the need for expensive off-site hauling or imported fill.
This calculator uses a simplified grid method where you define sections of your site with existing and proposed elevations. It sums the cut volumes and fill volumes separately, then shows whether your site is balanced or if you'll need to import or export material.
For contractors and civil engineers, cut-and-fill balancing is one of the most important cost-saving techniques in site development. Even small changes in proposed grade can shift thousands of dollars in earthwork costs.
Tracking this metric throughout the project lifecycle helps project managers identify potential issues early and maintain quality standards from foundation to final inspection.
Balanced earthwork saves money. If you can reuse all your cut material as fill, you eliminate hauling costs entirely. This calculator helps you find the balance point and estimate the cost impact of bringing in or removing material. Data-driven calculations reduce financial risk by ensuring that material orders, labor estimates, and project budgets reflect actual requirements rather than rough approximations.
For each grid cell: Depth = Existing Elevation − Proposed Elevation If Depth > 0 → Cut Volume = Area × Depth If Depth < 0 → Fill Volume = Area × |Depth| Total Cut = Σ Cut Volumes ÷ 27 (yd³) Total Fill = Σ Fill Volumes ÷ 27 (yd³) Net = Total Cut − Total Fill
Result: 185 CY cut / 139 CY fill / 46 CY net export
With 4 equal sections of 2,500 sq ft each: 2 sections average 2 ft of cut (5,000 ft³ = 185 CY) and 2 sections average 1.5 ft of fill (3,750 ft³ = 139 CY). The net is 46 CY of excess cut that must be exported off-site.
Divide your site into equal squares (e.g., 25×25 ft). At each grid intersection, record the existing elevation (from a survey) and the proposed elevation (from the design). The difference determines whether that cell is cut or fill, and the volume equals the cell area times the depth.
The most cost-effective grading plan balances cut and fill. If you have excess cut, lower the proposed grade slightly. If you need more fill, raise it. Small adjustments can shift hundreds of cubic yards. Work with your civil engineer to find the optimal balance point.
When soil is excavated, it swells 10–40%. When it's placed and compacted as fill, it shrinks to roughly its original bank volume (or slightly less). The net effect means you need about 5–10% more cut than fill to achieve volumetric balance. Professional estimators apply adjustment factors for swell and shrinkage.
For linear projects (roads, highways), engineers use mass diagrams to optimize the direction and distance of earthwork movement. The goal is to minimize haul distance by moving material to the nearest feasible fill location. This technique can save 20–40% on hauling costs compared to unplanned earthwork.
Cut is the removal of earth from high points on a site. Fill is the placement of earth in low points. The goal is to balance the two so that material removed from cuts is used for fills, minimizing the need for importing or exporting material.
Balanced earthwork eliminates hauling costs, which can be $5–15 per cubic yard. On a large site, balancing can save tens of thousands of dollars. It also reduces truck traffic, environmental impact, and schedule delays.
The grid method divides the site into equal squares, measures the elevation change at each square, and calculates the volume of each cell. Summing all cells gives the total cut and fill. Smaller cells produce more accurate results.
Excavated soil swells 10–40%. When you reuse cut as fill, it must be compacted back, which removes most but not all of the swell. Net effect: you typically need 5–10% more cut volume than fill volume to achieve balance.
Not necessarily. Organic topsoil, expansive clay, and contaminated material may not be suitable for structural fill. A geotechnical engineer should evaluate the cut material to determine if it meets fill specifications.
You'll need to import fill material from an off-site source. This adds material cost ($5–25/CY) plus hauling. Try adjusting your proposed grades to reduce the fill deficit before ordering imported material.
Accuracy depends on grid size. A 25×25 ft grid is typical for residential sites and provides good accuracy. Commercial projects may use 10×10 or 50×50 ft grids depending on terrain complexity. GPS-based methods are even more precise.
Professional engineers use AutoCAD Civil 3D, Carlson, or Trimble Business Center for precise grading design. For smaller projects, this calculator or a spreadsheet-based grid method provides adequate estimates.