Enter the boulder length, boulder width, boulder height, and boulder density into the calculator to determine the boulder weight.
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Boulder Weight Formula
The following equation is used to calculate the weight of a boulder.
Wb = L*W*H*d
- Where Wb is the Boulder Weight (lbs)
- L is the boulder length (ft)
- W is the boulder width (ft)
- H is the boulder height (ft)
- d is the density (lbs/ft^3)
- Sandstone Rock = 150 lbs/ft^3
- Limestone Rock = 175 lbs/ft^3
To calculate the Boulder Weight, multiply the length, width, and height to get the volume, then multiply by the density.
What is the weight of a boulder?
A boulders weight is determined by its total volume and the density of the type of rock. Not all boulders have the same density.
How to Calculate Boulder Weight?
Example Problem:
The following example outlines how to estimate the weight of a boulder.
First, determine the length, width and height of the boulder.
In this case, the boulder is measured to be 5 ft, 6ft, and 4 ft respectively for the length, width, and height.
Next, determine the density of the rock material.
For this example, the rock is pure limestone which has a density of roughly 175 lbs/ft^3.
Finally, calculate the boulder weight using the formula above:
Wb = L*W*H*d
Wb = 5*6*4*175
Wb = 21,000 lbs
