Concrete Slab Weight Calculator
Estimate the cured weight, concrete volume, order volume and material value of one or more rectangular concrete slabs from dimensions and editable concrete density.
Default project preview
6 short tons
Placed concrete volume
2.96 yd³
Order volume
3.26 yd³
Weight in smaller units
12,000 lb
Total slab area
240 ft²
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Slab volume = length × width × thickness × quantity. Weight = placed volume × concrete density. The order allowance applies to purchased volume, not the finished slab weight.
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BuildMeter Guides
Understand the measurements and assumptions
Use these visible reference guides before changing project inputs or planning allowances.
FAQ
Concrete Slab Weight Calculator questions
Does reinforcement add weight?+
Yes. This estimate covers concrete only unless the entered density intentionally includes reinforcement.
Why separate placed volume from order volume?+
The placed slab follows its geometry, while the purchased quantity may include waste, uneven subgrade and handling losses.
Can this be used for demolition hauling?+
It provides a planning estimate, but broken concrete bulk volume, embedded steel and hauler weight limits must also be considered.