How to use it
- Enter the length in feet.
- Enter the width in feet.
- Enter the thickness in inches.
- Click the Calculate button to see cubic feet, cubic yards and bag count.
Figure Cement Yards Calculator lets you turn the dimensions of any slab, walkway or footing into three useful numbers: cubic feet, cubic yards and the number of 80‑lb bags you’ll need. Knowing the cubic feet tells you the exact volume of concrete you’re ordering. Converting to cubic yards is how suppliers quote prices, so you can compare bids accurately. The bag count uses the industry standard that one 80‑lb bag yields about 0.6 ft³, letting you order the right amount without costly over‑orders. Simply enter length, width and thickness, hit Calculate, and read the three results instantly. The cubic‑foot result is useful for on‑site planning and for checking that your formwork fits. Multiply cubic feet by 1/27 to see cubic yards, the unit most contractors use for delivery quotes. The bag total helps you decide whether to buy in bulk or split the job across multiple deliveries. All calculations happen in your browser, so your project data stays private.
Pro tips
- Add about 10% extra for waste when calculating bags.
- Always round up to the next whole bag to avoid shortfalls.
- Order an extra bag for spillage or mixing errors.
- Convert thickness from inches to feet before entering the value.
Real-life examples
- A homeowner estimating concrete for a new patio slab.
- A contractor pricing a driveway pour for a client.
- A landscaper calculating material for a garden walk path.
Case study
Mike, a small‑business contractor, entered his 12 ft × 8 ft × 4 in slab. The calculator showed 2.96 cubic yards, 133 bags. He ordered 140 bags, avoided a costly shortage, and finished on schedule.