How many bags of concrete do you need?
Enter dimensions or known volume to calculate exactly how many concrete bags to buy.
Enter your measurements
Use project measurements or a known cubic volume. Built-in yields are for QUIKRETE Concrete Mix No. 1101; select custom yield for another brand.
Your estimate
Enter your dimensions to see your material estimate.
Calculate first. Order with confidence.
If entering dimensions, multiply length × width × depth (in feet). Otherwise, convert known cubic yards to cubic feet (× 27). Add the selected allowance, divide by bag yield, and round up.
Results are estimates, not a substitute for checking on-site dimensions, local requirements, packaging labels, or supplier specifications. Cost fields do not include delivery, taxes or labor unless you incorporate them into your entered price.
Understand the calculationsKnow what is included
Volume conversions use 27 cubic feet per cubic yard. Concrete bag-yield presets come from the QUIKRETE Concrete Mix No. 1101 data sheet. Gravel bulk-density values are editable examples—not universal constants.
View sources and accuracy notesCommon questions
How many 60 lb concrete bags do I need for one cubic yard?
With a 0.45-cubic-foot yield per 60 lb bag, one cubic yard (27 cubic feet) takes 60 bags before extra material.
Can I calculate bags without knowing cubic yards?
Yes. Choose Calculate from dimensions and enter your project length, width, and concrete depth. The tool calculates cubic feet automatically.
Can I use this for any concrete mix?
Use the Custom yield option when your bag states a different yield. Bag weight does not guarantee the same yield across all concrete products.
Why does the calculator round up?
Bags are sold as whole units, so any partial final bag must be rounded up for a purchase estimate.
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