Project category / 02
Concrete volume.
Measured clearly.
Estimate yards, bags, footings, holes, and costs while keeping waste and every assumption in view.
All-purpose estimator
Concrete Calculator
Convert project dimensions into cubic yards, cubic feet, and cubic meters with a visible waste allowance.
Calculate volume →Calculators
Run the numbers.
Each tool keeps measurements, allowances, package rounding, and costs visible.
Concrete Calculator
Calculate concrete volume in cubic yards, cubic feet and cubic meters with an editable waste allowance.
Open calculator →02Concrete Slab Calculator
Estimate slab volume from length, width, thickness and a clearly visible waste allowance.
Open calculator →03Concrete Bag Calculator
Convert concrete volume into whole bags using the yield printed on your selected mix.
Open calculator →04Concrete Footing Calculator
Estimate concrete for continuous rectangular footings using length, width, depth and quantity.
Open calculator →05Post Hole Concrete Calculator
Estimate concrete volume and bags for round post holes while accounting for the post itself.
Open calculator →06Concrete Cost Calculator
Estimate material and delivery cost from volume using your own local price per cubic yard.
Open calculator →Field notes
Measure smarter.
Plan the details.
How Many Bags of Concrete?
Calculate required cubic feet, divide by the mixed yield per bag, and round up. A 20-cu-ft project at 0.60 cu ft per bag needs 34 bags before waste.
Read guide →Guide 02Concrete Slab Thickness Guide
Slab thickness must match the intended loads, support conditions, reinforcement, joint design, materials, and local requirements; a quantity calculator cannot choose it safely.
Read guide →Guide 0360 lb vs. 80 lb Concrete Bags
For QUIKRETE Concrete Mix, the cited data sheet lists approximate yields of 0.45 cu ft for a 60 lb bag and 0.60 cu ft for an 80 lb bag; verify the exact mix you buy.
Read guide →Guide 04Concrete Yardage Chart
A 10 × 10 ft slab contains about 1.23 cubic yards at 4 inches thick, 1.54 yards at 5 inches, and 1.85 yards at 6 inches before waste.
Read guide →