Concrete Calculator

Concrete cubic yards & bags for a slab

Concrete needed
0 yd³
0 bags

Concrete Calculator — guide & how to use

What it does

This concrete calculator works out the volume in cubic yards for a slab, footing, or pad, and converts it to the number of 60 lb and 80 lb bags you'd need. Calculated privately in your browser, free.

How to use it

  1. Enter the length and width in feet.
  2. Enter the thickness in inches (4" is typical for a slab).
  3. Read the cubic yards and the bag counts.

How to embed this tool on your website

No account, no coding. Copy the embed code and paste it where you want it to appear:

<iframe src="https://snaptoolsuite.com/concrete-calculator/?embed=1"
  style="width:100%;max-width:560px;height:760px;border:0;"
  title="Concrete Calculator" loading="lazy"></iframe>
<p>Free <a href="https://snaptoolsuite.com/concrete-calculator/">Concrete Calculator</a> by Snap Tool Suite</p>
2 Paste it on your page
3 It just works

See it live: view a real embed example →

Frequently asked questions

How do you calculate concrete?

Length × width × thickness (in feet) = cubic feet; ÷ 27 = cubic yards. This tool also gives bag counts.

How many bags in a yard?

~60 bags of 60 lb or ~45 bags of 80 lb. For big pours, ready-mix is usually cheaper.

Is it really free?

Yes. 100% free, everything runs in your browser.

Plan a renovation

Mortgage Calculator · Paint Cost Calculator · Rental Property Calculator · Flooring Calculator · Tile Calculator · HELOC Payment Calculator

Related tools

Mortgage Calculator · Paint Cost Calculator · Rental Property Calculator · Flooring Calculator

🔒 Everything is calculated in your browser. We don't store or sell your data.