How to use it
- Enter length in feet.
- Enter width in feet.
- Enter thickness in inches.
- Read cubic feet, cubic yards, and bag count.
Concrete Crack Repair Calculator lets you instantly turn the dimensions of a crack area into the concrete you’ll need. Enter length, width and thickness; the tool converts to cubic feet, then to cubic yards (27 ft³ per yard) and finally to 80‑lb bags (0.6 ft³ per bag). Knowing the exact quantity prevents over‑ordering, saves money, and keeps the job on schedule. The results are shown as three numbers: total cubic feet for volume verification, cubic yards for delivery quotes, and the bag count for purchasing. Use the bag figure to call your supplier, and the cubic‑yard figure to compare bulk‑mix prices. The calculator is free, instant, and requires no registration. It also shows a quick conversion to gallons if you need to mix a slurry, and you can round up to the nearest whole bag for safety. Remember to add a small waste factor; ordering 5‑10% extra ensures you won’t run short when the mix sets faster than expected.
Pro tips
- Add 5‑10% extra volume for waste allowance.
- Round the bag count up to the next whole bag to avoid shortfalls.
- Order in cubic yards if you have a mixer; otherwise use bag count for small jobs.
- Double‑check thickness conversion from inches to feet (divide by 12).
Real-life examples
- Homeowner fixing a driveway crack before winter.
- Contractor estimating material for a commercial parking lot repair.
- Property manager budgeting for routine sidewalk crack maintenance.
Case study
Mike measured a 12‑ft by 8‑ft area with a 3‑in crack, ran the calculator and ordered 70 bags instead of guessing 50, finishing the repair on schedule and under budget.