Yes. Select feet before calculating to treat coordinates, elevations, area and volume as ft, ft² and ft³.

Stockpile & Excavation Volume Calculator

Free earthworks calculator

Stockpile & Excavation Volume Calculator

Estimate cut, fill and net earthwork volumes from surveyed Easting, Northing and Elevation points. Process CSV or ASCII DXF data securely in your browser.

✓ No file upload to a server✓ CSV & ASCII DXF✓ PDF & CSV reports

Step 1

Add surveyed points

Use metres and include at least three non-collinear XYZ points. More evenly distributed points normally produce a more reliable estimate.

m³

Drop a CSV or ASCII DXF file here or DWG is a proprietary binary format. Export it to DXF or CSV first.

CSV format and supported column names

Header example: Point,Easting,Northing,Elevation. Also recognised: X/Y/Z, E/N/RL and East/North/Level. Comma, semicolon and tab separators are supported.

Or paste coordinate data

No data loaded.

Step 2

Calculation settings

Calculation type Base surface Reference elevation (m) Grid resolution Bulking / compaction factor1.00 = measured in-situ volume Units

Method: the tool builds an inverse-distance-weighted grid inside the surveyed convex hull and integrates each grid cell against the selected horizontal reference plane. This is an estimate, not a certified TIN model.

Step 3

Results and report

Awaiting data

Cut volume—m³

Fill volume—m³

Net volume—m³

Surveyed area—m²

Elevation range—m

Points used—valid XYZ points

Plan preview — colours progress from lower (blue) to higher (orange) elevation.

Report details

Prepared by Company Project / site Report date

Notes and assumptions

Report details stay on this device and are used only in the generated file.

How to calculate stockpile or excavation volume

Export surveyed XYZ points from your total station, GNSS controller or CAD package as CSV or ASCII DXF.
Check that coordinates and elevations use the same unit and cover the entire boundary and surface.
Choose the correct base or design elevation, then select the appropriate calculation type.
Run the estimate, inspect the plan preview and quality warning, and record your assumptions.
Export the result for checking. For contractual quantities, compare it with an approved TIN-to-TIN workflow.

Choosing the correct reference level

For a stockpile on a flat slab, use the slab or surveyed toe elevation. For an excavation with a flat formation, use the design formation level. A single horizontal base is not suitable where the original ground or design surface varies significantly.

Professional limitation: results depend on survey coverage, point density, breaklines, edge definition and the chosen base. This browser calculator is intended for preliminary checks and transparent estimates; it does not replace validated survey software or professional judgement.

Frequently asked questions

Which file formats work?

CSV, TXT and ASCII DXF files containing 3D points are processed locally. Binary DWG files must first be exported to ASCII DXF or CSV.

Does the calculator upload my survey?

No. Parsing and calculation run in your browser. The tool does not send the survey file to the website server.

What is cut, fill and net volume?

Cut is material above the reference plane; fill is the void below it. Net volume is cut minus fill. Positive net indicates surplus cut and negative net indicates additional fill.

How accurate is the result?

No fixed accuracy can be promised. Reliability depends on the quality and distribution of points, correct edges, surface shape and base definition. Increase point density around sharp changes and always perform an independent check.

Can I use feet?

Yes. Select feet before calculating. Coordinates, elevations, area and volume will then be treated as ft, ft² and ft³.

Related surveying and earthworks tools

Continue with the online surveying and engineering tools, including the cut and fill calculator, slope and gradient calculator and distance and bearing calculator.