How to use it
- Enter the length in feet.
- Enter the width in feet.
- Enter the thickness in inches.
- Enter the price per cubic yard and click Calculate.
What it does – The calculator turns your garage dimensions and chosen concrete price into four actionable numbers: total cubic yards of mix, the estimated material cost, how many 80‑lb bags you’ll need, and the volume in cubic feet. Why it matters – Knowing the exact volume prevents over‑ordering (which wastes money) and under‑ordering (which delays the project). Reading the results – Cubic yards is the raw volume, multiplied by your price gives the Estimated cost. Divide the cubic feet (cubic yards × 27) by 0.6 ft³ per bag to see the Bags required. Use these figures to order the right amount and stay on budget.
Pro tips
- Add 5‑10% extra for waste and spillage.
- Round bag count up to the next whole bag.
- Order a little more than the calculated cost to cover price fluctuations.
- Measure thickness from the finished floor surface, not the sub‑base.
Real-life examples
- Homeowner planning a DIY garage floor remodel.
- Contractor bidding on a residential garage concrete job.
- Real‑estate investor estimating renovation costs for resale.
Case study
Mike entered his 20 ft × 12 ft garage dimensions, 4 in thickness, and $150/yd³ price. The calculator showed 0.89 yd³, $133, 52 bags, and 24 ft³, letting him budget accurately and order the right amount.