Excavation volume
Calculate bank volume using length, width, depth and quantity.
Excavation Calculator
Calculate the volume of rectangular excavations, trenches and excavations with sloped sides. Estimate loose material, approximate weight and the number of truck loads required for hauling.
Hauling estimate
Estimate loose material volume and truck loads based on usable truck capacity.
Approximate weight
Get an estimated material weight using the selected or entered density.
Free online tool
Excavation Calculator
Calculate excavation volume, loose material volume and the estimated number of truck loads required.
Excavation measurements
Material and hauling
This value is completed automatically based on the selected material, but it can be changed.
Results are approximate. Actual volume may vary due to site irregularities, soil type, moisture, slopes, over-excavation, measurement methods and effective truck capacity.
How excavation volume is calculated
For a rectangular excavation, volume is calculated by multiplying length, width and depth.
For an excavation with sloped sides, the calculator uses the average between the bottom width and the top width to represent a simplified trapezoidal section.
After excavation, soil loses part of its natural compaction. This causes the loose material volume to be greater than the original in-place bank volume.
Rectangular excavation
Volume = length × width × depth
Sloped excavation
Volume = length × average width × depth
Excavation calculation example
Excavation inputs
Length10 m
Width4 m
Depth1.5 m
Swell factor20%
Additional allowance5%
Truck capacity10 m³
Approximate result
The bank volume is:
10 × 4 × 1.5 = 60 m³
After applying a 20% swell factor, the loose volume is approximately 72 m³.
With an additional 5% allowance, the total hauling volume is approximately 75.6 m³.
Using trucks with a usable capacity of 10 m³, approximately 8 truck loads would be required.
Factors that can change the result
Actual volume may increase because of over-excavation, irregular ground, sidewall collapse, water, roots, rocks or differences between drawings and site conditions.
Soil swell can also change according to particle size, moisture, natural compaction and the excavation method used.
Hauling may be limited by weight, access, road restrictions, operating schedules, travel distance and actual truck capacity.
Preliminary estimate
This calculator does not replace a topographic survey, soil investigation, slope stability analysis or professional earthwork planning.
Before performing excavation work in Panama, verify terrain conditions, access, underground services, material disposal, safety requirements and project-specific regulations.
Excavation and earthworks in Panama
In Panama, excavation costs and planning can vary according to soil type, rainfall, site access, hauling distance, available machinery and the location where material will be disposed of.
For construction, earthmoving, topography, demolition or site evaluation projects, a professional site review is recommended before equipment and hauling services are contracted.
Visit MG Architecture & EngineeringExcavation and hauling questions
What is the difference between bank volume and loose volume?
Bank volume is the material volume before excavation. Loose volume is greater because soil expands after being removed from its natural compacted condition.
What is a soil swell factor?
The swell factor is the percentage increase in material volume after excavation. It can vary according to soil type, moisture, natural compaction, excavation method and fragment size.
How are the estimated truck loads calculated?
The calculator divides the total loose hauling volume by the usable truck capacity. The result is rounded up because even a partial final load requires an additional truck trip.
Can the calculator be used for sloped excavations?
Yes. Select the sloped excavation option and enter the length, bottom width, top width and depth.
Does nominal truck capacity always match usable capacity?
Not necessarily. Effective capacity may be reduced by weight limits, material density, moisture, road regulations, site access and safety requirements.
Can this calculator be used for earthworks in Panama?
Yes, it can be used as a preliminary reference for projects in Panama. Actual planning should also consider soil conditions, rainfall, access, hauling distance, disposal areas and truck restrictions.
Does the calculator replace a topographic survey?
No. The calculator only uses the measurements entered by the user. It does not automatically account for terrain irregularities, elevation changes, over-excavation or actual site geometry.
Can I use the result to request a contractor estimate?
The result can be used as an initial reference, but a final estimate should include equipment, operators, fuel, productivity, transportation, disposal fees, access conditions and site-specific risks.