How to use it
- Enter length in feet
- Enter width in feet
- Enter thickness in inches
- Read cubic feet, yards and bag count
Quikrete For Tubes Calculator lets you instantly convert the dimensions of a slab, patio, or repair patch into the concrete you’ll need. Enter length (ft), width (ft) and thickness (in). The tool computes the volume in cubic feet, then translates that to cubic yards (27 ft³ = 1 yd³) and the number of 80‑lb bags (each bag ≈ 0.6 ft³). Knowing these numbers helps you order the right amount, avoid costly over‑buy or shortfalls, and plan budget accurately. The results appear in three columns: total cubic feet, equivalent cubic yards, and required bags rounded up to the nearest whole bag. You can also compare different thickness options side‑by‑side to see how material needs change, making design decisions faster.
Pro tips
- Add 10% extra for waste and spillage
- Round bag count up to the next whole bag
- Order one extra bag for unexpected cuts
- Double‑check thickness conversion from inches to feet
Real-life examples
- A homeowner pouring a 12 ft × 8 ft patio 4 in thick
- A contractor estimating concrete for a 20 ft × 15 ft garage floor 6 in thick
- A DIYer repairing a 3 ft × 2 ft walkway 2 in thick
Case study
Mike needed a 10 ft × 12 ft patio at 4 in thickness. Using the calculator he saw he required 2.2 yd³, which translated to 4 bags. He ordered 4 bags, avoided over‑buy, and completed the patio on budget.