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Concrete Calculator - Find Out How Much Concrete You Need

  • SLAB
  • FOOTINGS
  • COLUMNS

A free concrete calculator to help you estimate the amount of concrete required for a slab (a rectangular element with a flat top usable surface).

Volume calculation requires height, depth, and width.

Fill in the following fields and press ‘Calculate’ to know about the right amount of concrete for your cause.

ft.
ft.
ft.

Results

A footing is a foundation of a structure that connects it to the ground, transferring loads from the structure to the ground. Volume calculation requires height, depth, and width.

Enter the depth, width and length of your concrete slab to calculate the number of cubic yards and concrete bags needed to complete your project.

ft.
ft.
ft.

Results

A column is a vertical structural member intended to transfer a compressive load. For example, a column might transfer loads from a ceiling, floor or roof slab or from a beam, to a floor or foundations. Volume calculation requires a diameter and a height.

Enter the depth, width and length of your concrete slab to calculate the number of cubic yards and concrete bags needed to complete your project.

inches
inches

Results

Concrete Calculator Formula

  • Determine how thick you want the concrete to be
  • Measure the length and width that you’d like to cover
  • Multiply the length by the width to determine the square footage
  • Convert the thickness from inches to feet
  • Multiply the thickness in feet by the square footage to determine cubic feet
  • Convert cubic feet to cubic yards by multiplying by .037

 

Here’s what the math looks like for a 10’ by 10’ concrete patio:

  • 10 x 10 = 100 square feet
  • 4 ÷ 12 = .33
  • 100 x .33 = 33 cubic feet
  • 33 x .037 = 1.22 cubic yards

Calculating, Ordering, Managing,
and Tracking Concrete Made Easy

Once you have calculated the required amount of concrete for your purpose, you are just a few clicks away from ordering the best concrete in the perfect amount from the ConcreteDirect app.

Order your perfect mix from ConcreteDirect today!

Ready-mix vs bagged concrete

Should I order concrete by the yard from a ready mix company or just use bags?

As a rule of thumb, if you’re working on larger jobs, you can look at ordering by the yard, otherwise you’re better off calculating the number of bags required and ordering according to it.

Bagged concrete works best for:

  • Setting posts for mailboxes or fences.
  • Pouring small slabs on sidewalks
  • Footings for walls, pergolas, decks, and more.
  • Repairing the walkways or walls.

Concrete by the yard is most suited for:

  • Setting up foundations for a house.
  • Large driveways, pool decks, patios, and more.
  • Commercial sidewalks.
  • Parking lots.

Frequently Asked Questions on Concrete Calculator Tools

1. How do I order concrete?

To order concrete for your job, you need to start by estimating the required amount of concrete. For that, you can scroll up and use the calculator!

Once you have a fair understanding of what you want to order, install the ConcreteDirect app on your smartphone or tablet (or, visit the webapp) and place your order with simple taps!

2. How do you figure out how much concrete to order?

The amount of concrete you require will depend on the size of the job you’re working on. For precise measurements, you can scroll up to top and use the calculator. Just enter the length, width, and height, and you’ll get the amount of concrete you require – both by the yard and by the bag.

3. How much extra concrete should I order?

It’s better to err on the side of caution. Keeping that in mind, you should keep an additional 5-10% buffer while ordering the concrete for your job site. Use the calculator present on this page to know the exact amount of concrete you are going to require, and then top it up a bit while ordering from ConcreteDirect!