How to use it
- Enter length in feet.
- Enter width in feet.
- Enter thickness in inches.
- Read cubic yards, bags, and cubic feet results.
What it does – The Cement Ready Mix Calculator takes the slab dimensions you enter and instantly converts them to three practical measures: cubic yards of concrete, the number of 80‑lb bags you’ll need, and total cubic feet. Knowing the cubic yards tells you how much material to order from the supplier; the bag count lets you budget for the exact number of mix bags, using the constant that each bag yields 0.6 ft³. The cubic‑feet figure is handy for comparing against project specs or local building codes. Simply plug in length, width, and thickness, hit calculate, and the results appear ready for ordering or estimating labor. No guesswork, no extra calculations. The cubic‑yard value is shown first, followed by the bag count and finally the cubic‑feet total, so you can copy the exact numbers into your purchase order.
Pro tips
- Add 10% waste to the bag count for cuts and spillage.
- Round up the bag total; you can’t buy a fraction of a bag.
- Order bags in full pallets to reduce delivery fees.
- Double‑check thickness conversion from inches to feet before entering.
Real-life examples
- A homeowner planning a 12 × 10 ft patio with 4 in thickness.
- A contractor estimating concrete for a 24 × 30 ft garage floor.
- A landscape designer sizing a 6 × 8 ft stepping stone area with 3 in depth.
Case study
Mike needed to pour a 12 × 10 ft patio 4 in thick. Using the calculator he saw he required 1.48 yd³, about 67 bags. He ordered 70 bags, avoided a costly short‑order, and completed the project on schedule.