Gravel Driveway Calculator
Three courses, three grades, weighed and priced separately.
Projects Calculators
A project needs several materials at once, in the right order and at the right depths. These size the whole job rather than one material, and each links out to the calculators behind it.
French Drain Calculator
Stone, pipe, fabric and the fall across the run.
Shed Base Gravel Calculator
Pad size, border overhang and the right grade of stone.
What these have in common
Every calculator here returns the same three things: cubic yards, tons and a bag count, because suppliers quote in all three and rarely in the one you asked for. Each also shows its working, so you can check the figure rather than trust it.
Densities come from one shared table, which means a chart on one page can never contradict the tool on another. Where a material genuinely varies, the page says so and lets you type your own figure in. Nothing here needs an email address.