Concrete Calculator
Estimate concrete volume and bags for your project.
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Construction Calculators That Make Every Project Easier
Quickly estimate materials, quantities and costs for concrete, roofing, fencing, flooring, landscaping and more.
Example estimate
Concrete slab
Recommended order
5.2 yd³
Area
120 ft²
Depth
4 in
Waste
10%
Weight
10.4 tons
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Browse focused tools organized around the work you are planning.
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Calculate sheets, wall areas and finishing materials.
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Paint & Finishes
Estimate paint, stain and coatings for interior and exterior work.
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Plan Your Project in Three Simple Steps
STEP 01
Measure
Enter your project dimensions.
STEP 02
Calculate
Get materials, quantities and useful conversions.
STEP 03
Build
Use your estimate to plan and purchase what you need.
Example result preview
More Than Just a Number
BuildCalcWorks turns dimensions into practical project information—quantities, conversions, waste allowances and useful ordering guidance.
Gravel Required
5.2 yd³
- Approximately
- 7.1 tons
- Recommended order
- 5.7 yd³
- Includes
- 10% waste allowance
- Estimated material cost
- $285–$410
Category spotlight
Planning a Concrete Project?
Choose a calculator matched to your pour, from a basic slab to post holes and driveways.
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No account required for standard calculators.
Metric + Imperial
Support for feet, inches, meters, centimeters and appropriate units.
Practical Results
Quantities, conversions and useful material information.
Easy on Any Device
Designed for homeowners, DIYers and professionals on the jobsite.
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Flooring
How to Calculate Square Footage for Flooring
Learn how to calculate square footage for flooring, measure rooms correctly, account for irregular areas and add waste before ordering flooring materials.
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How Much Extra Flooring Should You Buy?
Learn how much extra flooring to buy for cuts and waste, when to use 5%, 10% or 15%, and how to calculate boxes for your flooring project.
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