YardPour
Concrete math you can check, before you order a single yard.
Free calculators for slabs, footings, columns, steps, walls, and bags. Every result shows its formula. Every default, from bag yield to waste, is a field you can change.
Concrete Calculator
Every shape in one tool. Multi-section takeoff, bag counts, optional rebar grid.
OpenConcrete Slab Calculator
Pads, patios, driveways. Presets, round slabs, gravel base, and rebar grid.
OpenConcrete Bag Calculator
How many 40, 60, or 80 lb bags. Editable yields, rounded up after waste.
OpenConcrete Yard Calculator
Cubic yards to order from any dimensions, with coverage per yard.
OpenConcrete Cost Calculator
Your prices, your fees. Compare ready-mix delivery with bagged concrete.
OpenConcrete Footing Calculator
Strip footings and square pier pads, with quantities.
OpenConcrete Column and Tube Calculator
Round tube forms, columns, post holes, and hollow tubes.
OpenConcrete Step Calculator
Solid stairs on grade, with an optional top landing.
OpenConcrete Wall Calculator
Poured and stem walls, multiple runs.
OpenConcrete Block Calculator
Block count for a wall plus core-fill concrete and mortar.
OpenConcrete Weight Calculator
Pounds, tons, and kilograms from volume and an editable density.
OpenConcrete Mix Calculator
Cement, sand, and gravel for 1:2:3, 1:2:4, and custom ratios.
OpenWhy the numbers are easy to trust
Most concrete tools give one number and hide the assumptions inside it. YardPour shows its work.
Visible formulas
Each tool prints the formula and a worked example in plain text, so you can check the math with a pencil.
Net vs order
Waste starts at 0%. Pick 5% or 10% and both numbers stay on screen, so you know what is geometry and what is margin.
Editable bag yields
Default yields come from a widely cited manufacturer data sheet. If your bag says something different, type it in.
Your prices only
We never publish a "national average" price. The cost tool multiplies the quote you got, plus the fees you were told.
What is a "yard" of concrete?
A yard of concrete is one cubic yard: a cube 3 ft long, 3 ft wide, and 3 ft tall. That is 27 cubic feet. When a supplier says "5 yards," they mean 5 cubic yards.
One cubic yard covers about 81 square feet at 4 inches thick, because 27 ÷ (4 ÷ 12) = 81. At 6 inches it covers 54 square feet.
Ready to measure? The concrete calculator handles every shape, and the yard calculator focuses on ordering.