How to use it
- Enter length in feet.
- Enter width in feet.
- Enter thickness in inches.
- Read cubic yards, bags, and cubic feet results.
This calculator takes the three dimensions of your patio—length, width, and thickness—and instantly converts them into the three quantities you need to order: cubic yards of concrete, the number of 80‑lb bags, and total cubic feet. Knowing the cubic yards tells you how much material the supplier will deliver, while the bag count lets you budget for the mix you’ll actually pour. The cubic‑feet figure is useful for comparing different mix types or for planning sand and cement ratios. No manual conversions are required; just plug in the numbers and the tool does the math, using the standard 0.6 cf per 80‑lb bag and the 27 cf per cubic yard conversion. Read each result line to see exactly what to purchase. You can then share the totals with your contractor to avoid last‑minute surprises.
Pro tips
- Add 10% extra for waste and spillage.
- Round up the bag count to the nearest whole bag.
- Order a little more than the calculated cubic yards to cover settling.
- Double‑check thickness; a common mistake is entering inches as feet.
Real-life examples
- Homeowner planning a 12 ft × 10 ft patio with 4‑inch thickness.
- Landscape contractor estimating material for a client’s backyard patio.
- DIY enthusiast budgeting for a small patio extension after a remodel.
Case study
Maria entered 12 ft × 10 ft × 4 in for her new patio. The calculator showed 1.8 cubic yards, 90 bags, and 48 cubic feet. She ordered 2 cubic yards and 95 bags, avoiding a shortfall and saving $150 on excess material.