Excavation Calculator
Calculate earthwork excavation volumes in cubic yards or meters, soil swell expansion factors, required hauling truckloads, dumping fees, and equipment labor budgets.
Example Projects
House Foundation
40' × 30' Rect • 4' Depth • Clay Soil
Basement Dig-out
40' × 30' Rect • 8' Depth • Mixed Soil
Swimming Pool
32' × 16' Rect • 6' Depth • Sand Soil
Utility Trench
100' × 2' Trench • 3' Depth • Topsoil
Calculations Results
Dump Truck Loads Estimator
Compare required truckloads across standard commercial dump truck configurations.
| Truck Classification | Capacity (cu yd) | Loads Required |
|---|---|---|
| Small Dump Truck | 5 - 10 Yards | 0 loads |
| Standard Dump Truck | 10 - 16 Yards | 0 loads |
| Large Dump Truck | 16 - 20 Yards | 0 loads |
View Calculation Breakdown
Detailed Requirements Live
| In-Place Volume | 0 cu yd |
| Loose Volume | 0 cu yd |
| Estimated Soil Weight | 0 Tons |
| Selected Truckloads | 0 loads |
How this was calculated:
Enter parameters above to display detailed step-by-step mathematical calculations logs.
Everything behind the Excavation Calculator
Formulas, reference charts, and detailed answers — expand any section you need.
Soil Swell Factor Reference Table
| Soil Type | Swell Factor |
|---|---|
| Sand | 10 - 20% |
| Gravel | 10 - 15% |
| Clay | 20 - 40% |
| Topsoil | 20 - 30% |
| Rock | 40 - 60% |
Dump Truck Capacity Reference Table
| Truck Type | Typical Capacity |
|---|---|
| Small Dump Truck | 5 - 10 Yards |
| Standard Dump Truck | 10 - 16 Yards |
| Large Dump Truck | 16 - 20 Yards |
Excavation Weight Reference Table
| Cubic Yards | Approx Soil Weight |
|---|---|
| 5 Yards | 7 - 10 Tons |
| 10 Yards | 15 - 20 Tons |
| 20 Yards | 30 - 40 Tons |
| 30 Yards | 45 - 60 Tons |
How Many Cubic Yards of Dirt Will My Excavation Produce?
One of the most common questions during excavation planning is how many cubic yards of soil will be removed.
The answer depends on:
- Excavation Length
- Excavation Width
- Excavation Depth
- Soil Type
This excavation calculator automatically estimates excavation volume and soil removal requirements.
Excavation Calculator for Foundations
Foundation excavation projects require accurate volume calculations before construction begins.
This foundation excavation calculator helps estimate excavation quantities for:
- Houses
- Garages
- Additions
- Commercial Buildings
Accurate excavation estimates help reduce project delays and material hauling costs.
Basement Excavation Calculator
Basement excavation projects often involve large quantities of soil removal.
The basement excavation calculator estimates:
- Cubic Yards
- Truck Loads
- Soil Weight
- Disposal Costs
for residential and commercial basement construction.
Pool Excavation Calculator
Swimming pool projects require precise excavation calculations.
The pool excavation calculator estimates excavation quantities for:
- In-Ground Pools
- Fiberglass Pools
- Concrete Pools
while accounting for depth and shape variations.
Trench Excavation Calculator
Trenches are commonly excavated for:
- Water Lines
- Sewer Lines
- Drainage Systems
- Electrical Conduits
The trench excavation calculator estimates excavation volume and soil removal requirements accurately.
Cubic Yard Excavation Formula
Excavation volume is calculated using the following standard equation:
The calculator automatically converts the results into:
- Cubic Feet
- Cubic Yards
- Cubic Meters
for easy project planning.
Soil Swell Factor Explained
Excavated soil expands after being removed from the ground. Undisturbed, compacted soil contains minimal air pockets, but digging introduces air, causing the dirt to occupy more volume (known as the swell factor).
Typical swell factors include:
- Clay: 25%
- Sand: 15%
- Gravel: 12%
- Rock: 50%
Accounting for swell factor helps estimate truckloads more accurately.
How Many Dump Trucks Will I Need?
Truckload estimates depend on:
- Excavation Volume
- Soil Type
- Truck Capacity
The excavation calculator automatically estimates the number of truckloads required to remove excavated material.
Excavation Cost Calculator
Excavation costs depend on:
- Soil Conditions
- Project Size
- Disposal Fees
- Equipment Costs
- Labor Costs
The excavation cost calculator provides a realistic budget estimate before work begins.
Common Excavation Projects
House Foundation Excavation
Typically 40 ft × 30 ft × 4 ft.
Basement Excavation
Typically 40 ft × 30 ft × 8 ft.
Swimming Pool Excavation
Typically 16 ft × 32 ft × 6 ft.
Utility Trench Excavation
Typically 100 ft × 2 ft × 3 ft.
Frequently Asked Questions
How Do I Calculate Excavation Volume?
Multiply excavation length, width, and depth to determine volume. The excavation calculator automatically converts the result into cubic yards and cubic meters.
How Many Cubic Yards of Dirt Will Be Removed?
The amount depends on excavation dimensions and soil conditions. The calculator estimates both in-place and expanded soil volumes.
What Is a Soil Swell Factor?
A swell factor measures how much soil expands after excavation. This affects truckload and disposal calculations.
How Many Dump Trucks Do I Need?
Truck requirements depend on soil volume and truck capacity. The excavation calculator estimates this automatically.
How Much Does Excavation Cost?
Excavation costs vary based on project size, soil conditions, labor rates, and disposal fees.
Can I Use This Excavation Calculator for Basements?
Yes. Basement excavation mode is included.
Can I Calculate Trench Excavation?
Yes. The trench excavation calculator supports utility and drainage trench projects.
Can I Estimate Excavation Disposal Costs?
Yes. Disposal fees are included in the cost estimator.