How to use it
- Enter the patio length in feet.
- Enter the patio width in feet.
- Enter the thickness in inches.
- Click Calculate to see cubic yards, bags, and cubic feet.
This tool takes the three dimensions you provide—length, width and thickness—and instantly converts them into the three quantities you need to order concrete. Knowing the cubic yards tells you how much material the supplier will deliver, while the bag count lets you purchase the right number of 80‑lb mix bags (each bag = 0.6 ft³). The cubic‑feet figure is useful for comparing against other project estimates. The results are shown in three separate fields so you can quickly verify your order, avoid over‑buying, and keep the budget on track. No manual math, no guesswork—just clear numbers you can trust for any patio size.
Pro tips
- Add 5‑10% extra for waste and spillage.
- Round up the bag count to the next whole bag.
- Order a little more than the cubic‑yard total to cover minor variations.
- Double‑check thickness conversion (inches to feet) before calculating.
Real-life examples
- Homeowner planning a 12 ft × 15 ft patio with a 4‑inch slab.
- Contractor estimating materials for a commercial outdoor seating area.
- DIY enthusiast budgeting for a garden walk with varying thickness.
Case study
Mike entered his 10 ft × 10 ft patio at 4 in depth and saw 1.23 yd³, 56 bags, and 33.3 ft³. He ordered 56 bags, avoided a costly over‑order, and completed the patio on budget.