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How Much Concrete Do You Need?
Use Our Pro-Grade Calculator

Estimating a concrete pour shouldn't be guesswork. Whether you are a homeowner in Maine tackling a DIY walkway or a contractor prepping for a large-scale commercial slab, getting your volume right is the difference between a successful pour and an expensive short-load fee.

Concrete Calculator

Total Cubic Yards: 0.00
80lb Bags Needed: 0
* Recommended: Add 10% for waste and spillage.

At Day's Concrete Floors, Inc., we’ve spent over 40 years pouring everything from stamped patios to high-performance epoxy floors. We built this concrete volume calculator to give you the same precision we use on-site every day. How to Use the Concrete Calculator

Our tool is designed to handle the four most common types of concrete projects: Converting Volume to Bags vs. Ready-Mix

  1. Slabs: Ideal for patios, driveways, garage floors, and house slabs. Simply enter your length and width in feet and your thickness in inches.
  2. Footers: Perfect for wall footings or trench pours.
  3. Holes & Tubes: Use this for deck posts, fence pickets, or Sonotube foundations.
  4. Quantity Adjustment: If you are pouring 20 identical post holes, our "Tube" mode lets you multiply the volume instantly.

One of the most common questions we get at The Concrete Underground is: "Should I mix it myself or call the truck?"The "Mike Day" Pro-Tip: The 10% Rule

  • Small Projects: If your result is under 1 cubic yard, buying 80lb bags from a local supplier is usually the most cost-effective route. Our calculator automatically tells you exactly how many bags to grab.
  • Large Projects: If your project requires more than 1–2 yards, we highly recommend calling a local ready-mix plant. Manually mixing 45 bags of concrete for a single cubic yard is labor-intensive and can lead to "cold joints" if you can't mix fast enough.

In my 40+ years of finishing concrete, I have never seen a perfectly level subgrade. If you dig a 4-inch deep trench, there will be spots that are 4.5 inches deep. If you order the exact amount the calculator shows, you will run short.

Always add 10% for waste. It is much cheaper to have a little concrete left over than it is to pay a "short-load" fee (which can exceed $200 in the Monmouth, Maine area) for that last half-yard you missed. Why Precision Matters

Under-ordering concrete causes panic on the job site. When the truck is empty, and you still have ten feet of slab to go, the concrete already on the ground begins to set. By the time the second truck arrives, you risk a permanent visible line or structural weakness where the two pours meet.

Conversely, over-ordering is a waste of money and creates a disposal problem. By using our calculator and measuring your forms accurately, you hit that "sweet spot" of efficiency. Need Expert Help with Your Next Project?

If you are located in the Monmouth, Maine area and realize your project is a bit bigger than a DIY weekend task, Day's Concrete Floors, Inc. is here to help. We specialize in:

  • High-end stamped concrete and decorative finishes.
  • Durable epoxy and polyaspartic garage floor coatings.
  • Precision-leveled slabs and foundations.

Note: While we strive for perfection, please remember that concrete is a natural material. Day's Concrete Floors, Inc. is not responsible for natural cracking or freeze-thaw damage that may occur due to Maine’s unique climate.

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