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 Sakrete Concrete Estimator takes the length, width, and thickness you input and instantly converts them into three practical measures: total cubic feet, cubic yards, and the number of 80‑lb bags needed.
Why it matters – Knowing the exact volume prevents over‑ordering, saves money, and avoids project delays caused by running out of material.
How to read the results – Cubic feet is the raw volume of your slab. Divide that number by 27 to see cubic yards, the unit most suppliers quote. Divide cubic feet by 0.6 to get the bag count, rounding up to the nearest whole bag.
Use these numbers to place an accurate order, factor in a small waste allowance, and keep your build on schedule.
Pro tips
- Add 5‑10% extra for waste and spillage.
- Always round bag count up; you can’t buy a fraction of a bag.
- Check supplier’s bag yield; 0.6 cf per 80‑lb bag is standard for Sakrete.
- Verify thickness conversion (inches ÷ 12) before entering.
Real-life examples
- Homeowner pouring a 12 ft × 12 ft patio 4 in thick.
- Contractor estimating concrete for a 30 ft × 50 ft warehouse floor.
- DIYer planning a 6 ft × 8 ft garden walkway 3 in thick.
Case study
Mike needed a 10 × 10 ft driveway 4 in thick. The calculator showed 33.3 cf, 1.23 yd³, and 56 bags. He ordered 56 bags, saved $200 on excess material, and completed the job on schedule.