Concrete Slab Calculator
Good for patios, shed pads, sidewalks, and garage slabs.
You can enter standard slab dimensions or draw custom shapes, choose thickness and bag size, and get both ready-mix volume and bag-equivalent totals with a typical order buffer for field conditions.
Estimated concrete volume
2.28 cubic meters
~2.98 cu yd (common ready-mix unit in North America)
Slab area: 22.33 sq m
~2.46 cu m with 8% order buffer (typical) (~3.22 cu yd)
Equivalent 80 lb bags: 135
Estimates only—confirm with your ready-mix supplier; slump and site access affect real usage.
Cost basis
Truck-delivered mixes are priced by volume; store-bought jobs use bags matching the size selected above.
Cost & Budget Planner
Use your local pricing to turn quantity into a working budget range before calling stores or contractors.
Quantity basis: 2.3 cubic meters
Materials subtotal: CAD $0
Project subtotal: CAD $0
Contingency: CAD $0
Total budget: CAD $0
Planning ranges: DIY CAD $0 to CAD $0 | Contractor CAD $0 to CAD $0