Productive ToolboxEarth Filling Calculator
Calculate earth fill material volume for construction, land filling, ponds, and foundations. Includes compaction adjustment, truckload estimation, and cost calculation.
Earth Filling Calculator
Estimate fill material volume for construction, land filling, ponds, and foundations. Includes compaction adjustment, truckload estimation, and cost calculation.
Settings
Default truck capacity: 8 m³
Fill Volume Required
Fill Shape
Dimensions
Optional Estimates
Leave blank to use soil-type default
Quick Presets
Related tools
What is an Earth Filling Calculator?
An Earth Filling Calculator estimates the volume of fill material needed to raise, level, or fill a land area for construction, landscaping, road building, pond filling, or foundation preparation. Accurate fill estimation prevents costly over-ordering or project delays from under-ordering material.
This calculator supports five fill shapes — rectangle, square, triangle, circular, and custom area — and applies a compaction factor to account for soil settling after placement. Results are shown in cubic feet, cubic meters, and cubic yards, with optional truckload estimation and project cost calculation.
The compaction factor is critical: loose soil placed as fill typically settles 10–30% after compaction, meaning you need to order more material than the raw volume suggests. This calculator automatically adjusts for that with three compaction presets.
How to Use the Earth Filling Calculator
- 1Choose the units: Select the input unit and whether results are in cubic yards, cubic feet or cubic meters.
- 2Pick the area shape: Choose rectangle, circle or a custom area and enter its dimensions and the fill depth.
- 3Set compaction and soil: Choose a compaction factor and soil type; loose fill settles when compacted.
- 4Add truck size and price: Optionally enter the truck capacity and the price per unit with your currency.
- 5Read the order: See the compacted and loose volume, truckloads and estimated cost.
Fill Volume Formulas
| Shape | Raw Formula | With Compaction |
|---|---|---|
| Rectangle | L × W × D | L × W × D × CF |
| Square | S² × D | S² × D × CF |
| Triangle | 0.5 × B × H × D | 0.5 × B × H × D × CF |
| Circular | π × r² × D | π × r² × D × CF |
| Custom | Area × D | Area × D × CF |
CF = Compaction Factor (1.10 loose / 1.20 moderate / 1.30 heavy)
Example Estimates
| Project | Dimensions | Adjusted Volume | Trucks (8 m³) |
|---|---|---|---|
| Road base | 50×30×2 ft, heavy CF | 3,600 ft³ / 102 m³ | 13 |
| Foundation pad | 100×40×1.5 ft, mod CF | 7,200 ft³ / 204 m³ | 26 |
| Pond fill | 20×15×3 ft, loose CF | 990 ft³ / 28 m³ | 4 |
| Circular area | Ø30×2 ft, mod CF | 1,696 ft³ / 48 m³ | 6 |
| Land leveling | 2000 ft² × 1 ft, mod | 2,400 ft³ / 68 m³ | 9 |
Who Uses This Calculator?
Contractors
Estimate fill material quantities for accurate project bidding and scheduling.
Civil Engineers
Calculate earthwork fill volumes for roads, embankments, and site grading.
Landscapers
Estimate topsoil and fill needed for garden beds, berms, and yard leveling.
Homeowners
Plan fill requirements for yard grading, raised beds, and drainage projects.
Farmers
Calculate fill for irrigation channels, pond construction, and land leveling.
Site Managers
Verify fill material orders and track earthwork progress on construction sites.
Frequently Asked Questions
How much fill dirt do I need?
Area × depth, then add for compaction. A 50 × 30 ft area filled 1 ft deep is 1,500 cu ft = 55.6 cubic yards; with a 1.25 compaction factor, order about 69 cubic yards.
What is a compaction factor?
Loose fill contains air that is squeezed out when it is rolled or settles. A factor of 1.2–1.3 is typical for common fill, meaning you order 20–30% more loose material than the finished volume.
How many cubic yards are in a dump truck?
A standard tandem dump truck carries about 10–14 cubic yards (7.6–10.7 m³); a tri-axle 16–18 yd³. Heavy, wet soil may limit loads by weight before volume.
Fill dirt, topsoil or structural fill?
Fill dirt is subsoil for raising grade; topsoil is for lawns and gardens; structural or select fill under buildings and slabs must be engineered and compacted in lifts, often to 95% of Proctor density.
How do I convert cubic feet to cubic yards?
Divide by 27. 1 cubic yard = 27 cu ft = 0.765 m³.
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