OwnerKit toolsConcrete Calculator
Convert slab dimensions into concrete volume, whole bags or premix units, labour cost and a priced quote.
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How this is calculated
Measure the length, width and depth of the slab. Add an allowance for waste or irregularities. Use the yield from the bag or the supplier’s order increment to calculate how many whole units to purchase.
Frequently asked questions
How do I find the yield per bag?
Use the manufacturer’s volume yield for the mixed product. Bag weight is a different measurement.
Can I use premix instead of bags?
Choose premix order increments and enter the supplier’s volume and price for one increment. Check minimum order quantities separately.
Does this calculator design the slab?
It estimates material quantities and costs for dimensions you enter. Slab design, mix requirements and reinforcement depend on the job.
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