Concrete & Masonry Calculators

These tools turn dimensions into a concrete order: how many bags to load — or when a ready-mix truck is the smarter buy — with every yield taken from the manufacturer's data sheet, not guessed.

Concrete Slab Bags or ready-mix for a patio, walkway, or shed slab — waste factor included. Fence Posts Bags of concrete per post plus the gravel base, with hole sizing per Quikrete's guide. Sonotube / Footings Bags per round form tube at any diameter and depth, with a bags-per-foot reference table. Pavers & Base Pavers, compacted base, bedding sand, and polymeric sand per ICPI standards. Concrete Block CMU block count and pre-blended mortar bags from the wall face. Retaining Wall Wall blocks, caps, base, and drainage backfill per Allan Block guidance.

More on AllUnits

Lawn and yard projects: Landscaping calculators. One-off conversions: the Unit Reference converters for volume, length, and weight. Every factor these tools use is cited on Sources & Methods.