How to use it
- Enter length, width, and thickness in feet and inches.
- Input your price per cubic yard.
- Click Calculate to see cubic yards, estimated cost, bag count, and cubic feet.
Your driveway’s size determines how much concrete you’ll need and how much you’ll pay. This free calculator takes the length, width, and thickness you enter, converts the volume to cubic yards and cubic feet, then multiplies by the price you supply to give an estimated total cost. It also tells you how many 80‑lb bags you’ll require, using the industry standard that one bag yields about 0.6 ft³. The results appear instantly, so you can compare suppliers, adjust dimensions, or add a waste factor before you order. Understanding each column helps you budget accurately: cubic yards for material orders, estimated cost for your budget, bags for delivery planning, and cubic feet for quick cross‑checks. You can also save the numbers or print the page for contractor quotes.
Pro tips
- Add 5‑10% extra volume for spillage and uneven sub‑grade.
- Round up bag count to the nearest whole bag to avoid shortfalls.
- Get multiple quotes per cubic yard and compare total cost, not just price per bag.
- Double‑check thickness; a half‑inch change can add or subtract a full bag.
Real-life examples
- A homeowner planning a 12 × 20 ft driveway wants to know the exact cost before hiring a contractor.
- A small business needs to budget concrete for a new loading‑dock slab and compare supplier quotes.
- A landscape designer adds a decorative concrete path and needs precise material quantities for a client proposal.
Case study
Mike entered his 15 × 30 ft driveway dimensions, 4‑inch thickness, and his supplier’s $130 per cubic yard. The calculator showed 5.6 cubic yards, $728 total, and 16 bags. With this clear estimate, he ordered the right amount, avoided a $200 over‑order, and finished on schedule.