Concrete calculator: yards, cubic feet, and bag counts for slabs, footings, and posts. A 10×10 ft slab at 4 in needs 56 bags of 80 lb mix.

Fence post concrete calculator: bags per hole from post size and hole depth. A 12 in × 24 in hole needs 3 bags of 80 lb mix.

Gravel calculator: cubic yards, tons, and bags for driveways and paths. A 10×20 ft driveway at 4 in needs 2.47 yards, 3.46 tons.

Mulch calculator: cubic yards and bag counts by bed size and depth. A 100 sq ft bed at 3 in needs 0.93 yards, 13 bags.

Paver calculator: paver count plus base gravel and bedding sand. A 10×12 ft patio needs 132 pavers with cuts.

Drywall calculator: sheets for walls and ceilings with waste. 432 sq ft of wall needs 14 sheets, 15 with waste.

Tile calculator: tile count, boxes, and grout by room size and tile size. A 100 sq ft floor needs 7 boxes of 12×12 tile.

Flooring calculator: boxes for laminate, vinyl plank, and hardwood. A 12×15 ft room needs 8 boxes of LVP, 9 with waste.

Paint calculator: gallons by room size, coats, and openings. A 12×15 ft room with 8 ft ceilings needs 2 gallons for one coat.

Epoxy resin calculator: mixed gallons and resin/hardener split by area and thickness. 200 sq ft at 10 mils needs 1.25 gallons.