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Concrete Calculator

Work out how much concrete you need for a slab, footing, or wall.

Cubic yards

0

Cubic feet

0

80 lb bags

0

Bag cost

$0

Cubic metres

0

60 lb bags

0

Ready-mix cost

$0

A cubic yard is 27 cubic feet. An 80 lb bag yields about 0.6 cu ft and a 60 lb bag about 0.8 cu ft, which is why smaller bags work out dearer per volume. Always order a little extra; the waste allowance here is for spillage and uneven sub-base.

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What Is Concrete Calculator?

The Concrete Calculator works out the volume of concrete needed for a slab, footing, wall, or column in cubic yards, cubic feet, and cubic metres. It converts that to the number of 60 lb, 80 lb, or 50 lb bags and the total cost.

Who Uses the Concrete Calculator?

Homeowners use it before booking a concrete delivery, and contractors use it to check a quote. It also handles footings and walls, which are where people most often under-order.

How to Use the Concrete Calculator

  1. Choose the shape you are pouring.
  2. Enter the three measurements in the units shown.
  3. Set your bag size, price, and waste allowance.
  4. Read the volume, bag count, and cost.

Why Choose Our Concrete Calculator?

  • Slab, footing, wall, and column shapes
  • Bag counts for 60, 80, and 50 lb sizes
  • Shows both bag cost and ready-mix cost

Try the Concrete Calculator above — it is free, fast, and works on any device. Bookmark this page to return whenever you need it.