How to use it
- Enter the length in feet.
- Enter the width in feet.
- Enter the depth in inches.
- Read the resulting cubic yards.
The Ozinga Concrete Calculator turns the three dimensions of your pour—length, width and depth—into a concrete volume measured in cubic yards. You enter length and width in feet, depth in inches; the tool first converts depth to feet (divide by 12) then multiplies the three numbers to get cubic feet. Finally it divides by 27 to show cubic yards, the unit suppliers use for pricing and delivery. Knowing the exact yardage prevents ordering too little, which can halt a project, or too much, which wastes money. The result is displayed as a single number with two decimal places, making it easy to quote contractors, compare bids, or plan a budget. No extra calculations are required; just read the yardage and place your order.
Pro tips
- Add a 5‑10% waste allowance to cover spillage and uneven subgrade.
- Round up to the nearest whole yard; suppliers charge by the yard.
- Order a full yard even if you need a fraction—delivery fees are often per‑yard.
- Double‑check that depth is entered in inches, not feet, to avoid major errors.
Real-life examples
- Homeowner estimating concrete for a new driveway slab.
- Contractor calculating material for a garage floor foundation.
- Landscaper planning a patio pour and needing precise yardage.
Case study
Mike needed 2.3 cubic yards for his garage slab. Using the calculator, he entered 12 ft × 20 ft × 4 in and got 2.35 yd³, ordered 3 yd³, and completed the job without a second delivery, saving time and money.