Project category
Concrete & Masonry calculators
Volume, slab, footing and masonry material calculators.
- Concrete Slab Cost and Volume CalculatorEnter any slab length, width, and thickness to calculate exact cubic yards, a separate allowance, the rounded ready-mix order, and an optional cost from the current supplier price you enter. The 12 × 12 ft example is editable.
- Concrete Volume CalculatorEnter the dimensions of your pour — rectangular or cylindrical — in feet and inches to get the cubic yards of ready-mix to order, with wastage and an optional cost estimate.
- Ready-Mix Concrete Cost Calculator — Complete Quote TotalTurn a current ready-mix concrete supplier quote into an itemised USD supply total while keeping physical volume, billed volume, fees and sales tax separate.
- Concrete Bag Calculator — 40, 50, 60 & 80 lbEnter a known concrete volume or rectangular pad dimensions, then compare up to three exact products using the mixed yield printed on each bag—not bag weight alone.
- Deck Mud Calculator — Square Feet, Thickness & BagsEnter known mortar-bed square footage directly or calculate it from length × width, then add compacted thickness, exact product yield, and allowance to get volume and whole deck-mud bags.
- Post Hole Concrete Calculator — Bags per Fence PostEnter each round hole's diameter and concrete fill depth, subtract the actual post displacement, then convert the project volume into whole bags using the yield printed on your product.
- Retaining Wall Block Calculator with Cap BlocksEnter the approved wall-face run and block-field height plus the exact installed wall-block and cap dimensions to produce separate course and cap takeoffs.
How these concrete & masonry calculators work
Each calculator starts from site measurements in feet and inches, converts them with a tested formula, shows the exact quantity and your waste allowance as separate lines, then rounds up to the package or order unit you actually buy. Prices are optional and always entered by you, so the estimate reflects your supplier rather than a national average.
Concrete & Masonry measuring guides
Step-by-step guides with worked examples and reference tables for United States.
- How to Measure a Concrete Slab Before You OrderA practical, step-by-step way to measure a rectangular or L-shaped slab, check thickness, and turn the measurements into a concrete order.
- Concrete Order Quantities ExplainedUnderstand the four different quantities that decide how much concrete to order: exact volume, waste allowance, order increment, and supplier minimum.
- How to Measure an Irregular Concrete SlabMeasure L-shaped, T-shaped, and other irregular slabs by decomposing them into rectangles, then calculating each section separately.
- How to Calculate Concrete Slab Area (and Why It Isn't Volume)Calculate concrete slab surface area as length times width, then see why thickness turns that area into the volume you actually order.
- How Much Concrete for a DrivewayEstimate driveway concrete by splitting the drive into rectangular sections and multiplying total area by the slab thickness from your plans. Thickness is your input.
- How to Plan a Concrete Slab PourA step-by-step planning workflow that chains the gravel base, slab volume, bags versus ready-mix, order quantity, and cost into one supplier-ready concrete order.
- How Much Does a Yard of Concrete Cover?One cubic yard of concrete covers 81 sq ft at 4 inches thick. Coverage equals 324 divided by thickness in inches, with a full thickness table.
- How to Measure a Concrete FootingMeasure concrete footings for walls, posts, or structures. Handle continuous trenches and isolated pads, accounting for footing depth and width.
- How Much Concrete for Sonotube Piers and ColumnsWork out the concrete for cylindrical Sonotube piers and columns from tube diameter, depth, and count, then convert cubic feet to cubic yards or bags.
- How Much Concrete for StepsEstimate concrete for solid poured steps by stacking each step as a rectangular prism from rise, run, width, and step count. Hollow or fill-backed steps use less.
- Construction Unit Conversion Guide: Imperial and MetricConvert construction length, area, volume and mass units with exact factors, while keeping material density separate from unit conversion.
- Concrete Slab Cost per Square Foot: How the Price Is BuiltConcrete slab cost per square foot = cubic yards × your supplier's rate plus short-load, delivery, base, forms, rebar, labor and tax, ÷ the slab's area.
- Concrete Bag Yields: 40, 50, 60, and 80 lbCompare product-specific 40, 50, 60, and 80 lb concrete bag yields, convert cubic feet to whole bags, and check the exact product before ordering.
- Ready-Mix vs. Bagged Concrete: When to Use EachDecide between ready-mix delivery and bagged concrete based on volume, access, working time, and site conditions. Compare cost, effort, and practicality.
- How to Measure Post Holes for ConcreteUse the post-hole concrete calculator by measuring hole depth, diameter, and post size. Handle multiple holes and account for post displacement in the volume.