CONCRETE VOLUME
Concrete calculator
Estimate concrete for a measured slab. Converts length, width and depth into cubic yards, adds waste, and counts bags at the yield you enter. This is an estimated requirement—not a purchase, safety, engineering or code-compliance instruction.
Build your estimate
Choose a unit system. Switching units converts the values already entered.
Estimated requirement
Enter measurements and calculate.
- How it was calculated
- Your formula will appear here.
- Assumptions
- Waste and package assumptions will appear here.
- What may change it
- This is quantity planning only. It does not determine slab design, reinforcement, drainage, strength, forms or code requirements.
Worked example
A 10 ft × 10 ft slab at 4 in depth is about 1.23 yd³ before waste.
Check the product label and supplier before ordering. Measured conditions, layout, cuts, compaction, site preparation and local requirements may change your actual requirement.
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