"How much gravel do I need?"

Sound familiar?

"How many yards will cover my driveway? "And how many ton is that?"

To ease the stress of deciding how much material you need, use our material calculator to find the correct amount of material for your project.

Then Contact Us. Dont worry, we'll be happy to help you make sure you get the right product, and the right amount.

Material Calculator

The Calculator helps you to estimate the tonnage of material required for your job.

Note! These calculators require a JavaScript-enabled browser to run!

To use the Material Calculator:

  • enter the width, length, and thickness of your job,
  • select the thickness in feet or inches
  • click on either Rock w/ Fines, Clean Rock, or a Custom density selection
  • the Rock w/ Fines and Clean Rock selections will fill in the density of the rock for you; the Custom selection allows you to enter a rock density in the Density field. Use the values for Sand or Dirt below, or enter you own value
  • click on the Calculate button

The calculator will estimate the number of tons of aggregate that will be required.

Please note that densities will vary somewhat between different loads, but the default values assigned for Clean Rock and Rock with Fines are good standard "rules of thumb" for estimating.

Material Calculator

Thickness Density
(lbs/cubic yd)

Clean Rock

Rock w/Fines

Total Tons Required:

LR Falk Construction Company would like to thank the Granite Rock Company for use of parts of the code for the material calculator.

L.R. Falk Construction is a family-owned, third generation business serving north-central Iowa and southern Minnesota.

Contact us for all of your aglime and rock needs.