Concrete Calculator
Calculates the cubic yards of concrete needed for a slab.
Every calculation runs instantly in your browser, so your inputs are never sent to a server, and the tool is free with no sign-up. You can save the results as an Excel file with live formulas and reuse them later.
Inputs
- Length (ft)
- Width (ft)
- Thickness (in)
Example calculation
Concrete needed: 2.37 yd³
| With 10% waste | 2.61 yd³ |
|---|---|
| Cubic feet | 64 ft³ |
Method & notes
Volume = length × width × thickness, converted to cubic yards. Order ~10% extra.
Tips
Change any input and the result recalculates in real time. After downloading the Excel file, you can reuse it by editing only the yellow input cells.
FAQ
How does the Concrete Calculator work?
Calculates the cubic yards of concrete needed for a slab. Volume = length × width × thickness, converted to cubic yards. Order ~10% extra.
Can I save the results?
Yes. You can download the results for free as an Excel (.xlsx) file with live formulas that recalculate when you change the yellow input cells.
Is it free?
Yes — all Calcova calculators are free, and you can save results as an Excel file.