Rectangular Hole Soil Volume Calculator

Oct 30 2016 | posted in: Calculators, Digging Holes with a Shop-Vac | 0

Besides calculating the volume of a Rectangular Hole, this Rectangular Hole Soil Volume Calculator computes the weight of soil removed, and the increased volume of soil removed factored for swell. These numbers are very useful when selecting a shop vacuum for digging holes.

Rectangular Hole Soil Volume Calculator
Sandy Clay and Gravel removed from hole

Soil Volume,  Soil Weight, and Swell Calculator For Rectangular Holes

by Titus Nelson, PE

Inventor of the Holey-Moley Digger

Use the following Rectangular Hole Soil Volume Calculator to determine the volume of a rectangular hole in (cubic feet) and (gallons). In addition the weight of the soil removed and the new volume in (cubic feet) and (gallons) will be calculated based on soil swell factor.  The calculated numbers can be used to determine the amount of soil that a Shop Vacuum will have to remove in Cubic Feet and Gallons as well as the Weight of the Soil in pounds.

These numbers are useful when selecting a shop vacuum as described in the blog article on Selecting The Best Hole Digging Shop Vacuum and for determining the size of a Shop Vacuum for digging holes.  Also see the blog page on Digging Deep, Straight, Uniform Holes with a Shop-Vac for more information.  Most of all we love feedback, let us know how you like these calculators.

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Rectangular Hole Soil Volume Calculator

In addition to the hole volume in cubic feet and gallons, this calculator also outputs the soil weight in pounds, based on selected soil densities and input hole dimensions.  Lastly it provides removed soil volume based on selected soil swell factors.


1. Select Soil Type for Density
2. Select Soil Type (same as above) for Swell factor
3. Input Hole Length in inches
4. Input Hole Width in inches
5 Input Hole Depth in inches

Output (Volume)

1. Hole Volume – Cubic Feet
2. Hole Volume – Gallons

Output (Weight)

3. Soil Weight – Pounds

Swell Volume (increased volume after removal from hole)

4. Soil Volume – Cubic Feet
5. Soil Volume – Gallons


This Soil Volume Weight Swell Calculator makes it easy to calculate the volume of a rectangular hole, the weight and volume of soil removed from the hole, which can be helpful when using a Portable Engine Driven Shop Vacuum and for determining the size of a shop vacuum canister required to hold the removed soil.

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