Construction Material Calculators for Home Projects
Find out how many bags or cubic yards to buy before you mix, pour, or call the ready-mix plant.
Concrete slab calculator
Patio, driveway, or shed pad. Length, width, and thickness. Cubic yards plus 40, 50, 60, and 80 lb bags.
Fence post calculator
Round holes for fence, deck, or mailbox posts. Enter diameter, depth, and how many posts.
Concrete footing calculator
Strip trench or pad. Run length, width, and depth. Bags and cubic yards for the pour.
Who this is for
Homeowners setting posts or pouring a shed pad, and contractors who want a second check before ordering. Results use standard bag yields printed on common US pre-mix bags.