Guide hub
Concrete guides and calculators
Estimate concrete slabs, post holes, CMU wall-face blocks, mortar quantities, bag counts and real purchasing assumptions.
2 published guides · 2 calculators
Before you open a calculator
Read the decisions behind the estimate
Use the slab and post-hole articles to check volume calculations before choosing bags or ready-mix.
- Step 1
Match the shape to the job: slab thickness, footing dimensions, or cylindrical hole diameter and depth.
- Step 2
Convert the total volume to cubic yards or metres with an allowance appropriate to uneven excavation and waste.
- Step 3
Compare the bag yield on a specific product with the ready-mix minimum order; keep site preparation and reinforcement separate.
Published guides
Read the measurement context
Fencing guide
How Much Concrete Do I Need per Fence Post?
Estimate concrete for fence-post holes with a cylinder formula, bag-yield checks, and links to the fence and concrete calculators.
Read guide
Concrete guide
Concrete Slab Cost: Volume, Bags, Ready-Mix, and Site Scope
Calculate slab volume for common sizes, then separate concrete material from site prep, reinforcement, finishing, delivery, and labor assumptions.
Read guide
From guidance to a quantity
Check the measurements in a working calculator
Once you have the right measurements and product assumptions, run the estimate and verify the rounded ordering quantity. Detailed tool comparisons and calculator choices live in the dedicated calculator hub.
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