Cut and Fill Calculator: Free Online Earthwork Volume Estimator
Use our free cut and fill calculator to determine exactly how much soil needs to be excavated (cut) and how much needs to be placed (fill) for your grading or site preparation project. Designed for excavation contractors, civil engineers, and site superintendents, this tool calculates cut, fill, and net earthwork volumes. Enter your cut depth, fill depth, and site area to get instant, accurate volume results for earthmoving planning.
How to use this calculator.
- Determine cut and fill depths. Use a surveyor's stakes or a laser level to measure the difference between existing grade and proposed grade across your site. Average these values for the cut depth (high areas to be excavated) and fill depth (low areas to be raised).
- Enter the site area. Input the total area in square feet being graded. For precise results, divide the site into sections with similar cut or fill depths and calculate each separately.
- Review your results. The calculator shows cut volume, fill volume, and net volume. A positive net volume means you have excess soil to export (haul away). A negative net volume means you need to import fill (bring soil to the site).
How do you calculate cut and fill earthwork volumes?
Cut and fill volumes are calculated by multiplying area by the average depth for each operation, then comparing the totals.
Cut Volume (cu yd) = Area (sq ft) × Cut Depth (ft) ÷ 27
Fill Volume (cu yd) = Area (sq ft) × Fill Depth (ft) ÷ 27
Net Volume (cu yd) = Cut Volume - Fill Volume
Where:
- Positive net volume indicates surplus soil to be exported. Budget for haul-off costs ($50-$150 per truckload depending on distance).
- Negative net volume indicates a shortage -- you need to import fill dirt. Budget $15-$25 per cubic yard delivered.
- Balanced cut and fill (net near zero) is the most cost-effective outcome. Design the grading plan to minimize import/export.
Example calculation.
Let's calculate cut and fill for a residential building pad.
Scenario: You are grading a 3,000 sq ft building pad. The average cut depth is 2.5 ft on the high side and the average fill depth is 1.5 ft on the low side.
- Calculate cut volume: 3,000 sq ft × 2.5 ft ÷ 27 = 277.8 cu yd
- Calculate fill volume: 3,000 sq ft × 1.5 ft ÷ 27 = 166.7 cu yd
- Calculate net volume: 277.8 - 166.7 = 111.1 cu yd (surplus to export)
Result: You have approximately 111 cubic yardsof excess soil to export. At 12 cubic yards per dump truck, that is about 10 truckloads. At $75 per load haul-off, budget approximately $750 for soil export.
Tips from the field.
- Strip topsoil first. Before measuring cut/fill depths, strip and stockpile the topsoil layer (typically 4-8 inches). Topsoil is not suitable for structural fill and should be set aside for final landscaping.
- Use a GPS-equipped dozer. Modern grading equipment with GPS machine control can cut and fill to within 0.1 ft of design grade without survey stakes. The efficiency gain typically pays for the technology on any site over 1 acre.
- Account for compaction in fill areas. Loose fill compacts by 10-25%. If you need 100 cu yd of compacted fill, you need to place approximately 120 cu yd of loose fill. Use our Fill Dirt Calculator separately for this conversion.
- Bench slopes properly. When filling on sloping ground, cut horizontal benches into the existing slope before placing fill. Without benches, the fill layer can slide along the smooth slope interface -- a common cause of fill slope failure.
Disclaimer: This calculator provides estimates for planning purposes only. Actual cut and fill volumes require professional surveying and detailed cross-section analysis. Soil compaction, swell, and shrink factors vary by material type. Always consult a civil engineer or licensed surveyor for final grading plans. PavementCalculator.com assumes no liability for earthwork discrepancies.
Cost, price, and density figures on this page reflect approximate U.S. averages as of August 2026 and vary by region, supplier, and material availability.
Frequently asked questions.
What is cut and fill in construction?
Cut is the excavation of soil from high areas on a site. Fill is the placement of that soil into low areas to create a level grade. Balanced cut and fill (where cut volume equals fill volume) is ideal: it eliminates the cost of importing or exporting soil from the site.
How do I calculate cut and fill volume?
Cut volume = area x cut depth / 27 (cubic yards). Fill volume = area x fill depth / 27. The net volume (cut minus fill) tells you if you have excess soil to export (positive) or need to import fill (negative). Use our calculator for accurate results.
What is a balanced cut and fill site?
A balanced site has cut volume approximately equal to fill volume, meaning all excavated soil is reused on-site. This is the most economical approach since it eliminates haul-off and import costs. Earthmoving contractors aim for balanced designs during the grading plan phase.
How do you calculate cut and fill volume?
Surveyors use the grid method or cross-section method. The grid method divides the site into squares and averages corner elevations. The cross-section method calculates volume between parallel cross-sections. Modern software (Civil 3D, AutoCAD) automates this, but our calculator provides manual estimates.