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Coverage Calculator

Fairness Is Our Guarantee

Here at Southern Stone & Supply in Palmetto, GA, we want our customers to receive just the right quantity of supplies they need. We have a couple of very useful tools that allow you to get an accurate, ideal figure to accomplish your requirements. With us, you won’t have to worry about wasted, excess materials.


Cubic Yards Calculator

Mulch Calculator for a Circle


Material Coverage

This includes building stones and flagstones. Please see the individual product listings for the estimated coverage per ton.

Gravel, Mulch, Sand, and Soil

  • 162 square feet at a 2-inch depth per cubic yard
  • 128 square feet at a 2 ½-inch depth per cubic yard
  • 108 square feet at a 3-inch depth per cubic yard
  • 81 square feet at a 4-inch depth per cubic yard

Pine Straw Bales

30 to 50 square feet per bale at 2 inches

Bags and Buckets

  • A ½-cubic foot bag of gravel will cover 2.37 square feet at a 2 ½-inch depth
  • A 1.15-cubic foot bag of rubber mulch will cover 6.9 square feet at a 2-inch depth
  • A 2-cubic foot bag of mulch will cover 9.48 square feet at a 2 ½-inch depth
  • A 3-cubic foot bag of mulch will cover 14.22 square feet at a 2 ½-inch depth
  • A ¾-cubic foot 5-gallon bucket of material will cover 3.56 square feet at a 2 ½-inch depth

Material Conversions

One Cubic Yard Equals

Tons per Cubic Yard: Gravels

  • Lava Rock (all) = 0.5 tons (1000 pounds) per cubic yard
  • Eastern Sunrise = 0.9 tons (1800 pounds) per cubic yard
  • Crimson = 1.1 tons (2200 pounds) per cubic yard
  • Rock (57 and 89) = 1.2 tons (2400 pounds) per cubic yard
  • Lime Rock (919) = 1.25 tons (2500 pounds) per cubic yard
  • River Rock (all) = 1.325 tons (2650 pounds) per cubic yard
  • Granite (all) = 1.325 tons (2650 pounds) per cubic yard
  • Marble (all) = 1.35 tons (2700 pounds) per cubic yard

Cubic Footage per Ton of Building Stones and Flagstones

  • 5 cubic feet per ton*
  • 133 pounds per cubic foot*

*Note: The true cubic footage weights are 145 to 160 pounds per cubic foot for solid, unbroken stone, or about 13 cubic feet per ton on average. Since it’s unlikely that you’ll be able to stack the stones that tightly, using the true numbers will result in an erroneous quantity delivered to your site—something we want to avoid. We want to keep our customers happy, which is why we have adjusted this number and made it more consistent with reality.

Do you have questions on how to compute for the quantity you need?
Call us today at 678-962-3534.