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Concrete Calculator

Calculate the cubic meters of concrete needed for slabs, driveways, patios, foundations, and walkways.

Slab Dimensions

Length*

m

Width*

m

Thickness*

cm

Standard is 10 cm for slabs

Price per Cubic Meter (Optional)

$

Price per cubic meter of ready-mix concrete

Pro Tips from the Workshop

•Always order 5-10% extra concrete for waste and spillage
•Order 10% extra to account for spillage and uneven subgrade
•Hire a professional for slabs over 20 m² — finishing matters
•Have extra hands ready - concrete work moves fast once you start

Ready to Calculate

Enter slab dimensions to get concrete estimates

Understanding the Calculation

This calculator uses metric measurements to estimate concrete volume:

Enter slab length and width in meters
Enter thickness in centimeters (converted to meters for calculation)
Estimate bags: 1 cubic yard = approximately 45 bags of 80lb mix

Common Thickness Guidelines

Sidewalks: 10 cm
Patios: 10 cm
Driveways (cars): 10-15 cm
Driveways (heavy vehicles): 15-20 cm
Garage floors: 15 cm