How to estimate gravel for a driveway or path
Calculate the compacted volume from length × width × depth, convert the volume to cubic yards, then apply an appropriate density to estimate tons. Because suppliers sell different materials at different densities, PrepMyBuild makes density editable instead of hiding it.
Why your measurements stay editable
PrepMyBuild uses your description to help fill the fields, then calculates the result from the measurements and assumptions shown on screen. You can review and change those inputs before using the estimate.
Use the result as a purchasing conversation
Material estimates are most useful when checked against supplier packaging, delivery rules, product-specific coverage and the conditions at the actual project site. PrepMyBuild is designed to make those checks easier, not replace them.