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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CalculateCalculate Everything for Your Next Project
Browse focused tools organized around the work you are planning.
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Volume, bags and materials for structural concrete work.
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Plan aggregate, soil, mulch, pavers and outdoor projects.
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Estimate roof area, pitch, squares and shingles.
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Work out fence dimensions, spacing, costs and materials.
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Plan boards, framing, lumber quantities and deck costs.
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Flooring & Tile
Plan flooring materials with calculators for floor area, boxes, tile, laminate, vinyl plank, hardwood, carpet and project cost.
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Painting
Estimate paint, primer and project materials for walls, ceilings, interiors and exterior surfaces.
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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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Metric + Imperial
Support for feet, inches, meters, centimeters and appropriate units.
Practical Results
Quantities, conversions and useful material information.
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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.
Read guideFlooring
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.
Read guideFlooring
How Many Boxes of Laminate Flooring Do I Need?
Learn how to calculate how many boxes of laminate flooring you need using room area, waste allowance and coverage per box, with easy worked examples.
Read guideFlooring
How Much Tile Do I Need?
Learn how to calculate how much tile you need using room area, tile size, box coverage and waste allowance, with easy examples for floors and walls.
Read guideFlooring
How Many Vinyl Planks Do I Need?
Learn how to calculate how many vinyl planks and boxes you need using room size, plank dimensions, box coverage and waste allowance.
Read guideFlooring
How Much Carpet Do I Need?
Learn how to calculate how much carpet you need using room dimensions, carpet roll width, seams and pattern allowance, with easy worked examples.
Read guideDecks
How to Calculate Deck Stairs
Learn how to calculate deck stairs using total rise, number of risers, riser height, tread run and total stair run, with an easy worked example.
Read guideDecks
How to Calculate Deck Stair Stringers
Learn how to calculate and lay out deck stair stringers using total rise, riser height, tread run, stringer length and tread thickness adjustments.
Read guide