Enter length in Feet, enter width in inches,
enter depth in inches.
Enter cost of 1 cubic yard of lava rock.
Approximate 2 inches of lava rock is needed,
for good coverage.
Lava rock is approximately 1 inch in width.
Round off to the next highest even number.
This calculator is intended for approximate guidance.
Feel free to click the +1 button if you found this helpful.