How to use it
- Enter length, width and thickness of the slab.
- Input the price per cubic yard of concrete.
- Click Calculate to see volume, bags, and total cost.
This tool quickly tells you how many cubic yards of concrete you’ll need for a driveway, the estimated price, the number of 80‑lb bags required, and the total cubic feet. Knowing the exact volume helps you budget accurately, avoid over‑ordering, and plan delivery dates. The results are shown in four easy‑to‑read fields: Cubic yards (the standard ordering unit), Estimated cost (based on your price per yard), Bags (using the 0.6 ft³ per 80‑lb bag rule), and Cubic feet (useful for comparing other projects). Simply plug in your dimensions and price, and you’ll have a clear, actionable quote in seconds.
Pro tips
- Add 5‑10% extra for waste and spillage when ordering bags.
- Round up bag counts; you can’t purchase a fraction of a bag.
- Confirm the price per cubic yard includes delivery to avoid surprise fees.
- Double‑check thickness; a common mistake is entering inches as feet.
Real-life examples
- A homeowner planning a new 20 ft × 12 ft driveway wants to know the concrete cost before getting quotes.
- A contractor needs to estimate material for a 4‑inch thick commercial parking strip and compare supplier prices.
- A DIY enthusiast wants to order the right number of bags for a backyard patio without excess waste.
Case study
Emily entered her 18 ft × 10 ft driveway dimensions, 4 in thickness, and a $115 per cubic yard price. The calculator returned 2.22 yd³, $256 estimated cost, and 124 bags, letting her order precisely and stay within budget.