Concrete
Concrete Slab Calculator
Estimate concrete volume, purchase quantity, waste, and cost for a rectangular slab.
Plan with confidence
Accurate calculators for real home projects
Estimate materials, purchase quantities, waste, and cost with formulas and assumptions you can inspect.
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Start with your project
Concrete
Post-Hole Concrete Calculator
Estimate concrete volume, post displacement, whole bags, leftovers, and cost for round post holes.
Landscaping
Mulch and Soil Calculator
Estimate material volume, whole bags, bulk quantity, and separate bag-versus-bulk costs for rectangular and circular areas.
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Calculator categories
2 published calculators
Concrete
Concrete volume, bag, footing, post-hole, and slab planning calculators.
1 published calculator
Landscaping
Material estimates for soil, mulch, gravel, and outdoor projects.
1 published calculator
Flooring
Flooring, tile, coverage, waste, and package quantity calculators.
1 published calculator
Painting
Paint, primer, coverage, container, and project cost calculators.
4 published calculators
Outdoor Projects
Planning calculators for driveways, paver surfaces, retaining walls, fences, yards, and exterior work.
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Recently added calculators
Outdoor Projects
Fence Materials Calculator
Estimate posts, pickets or panels, rail stock, post-hole concrete bags, and optional component costs for one straight fence run.
Outdoor Projects
Retaining Wall Materials Calculator
Estimate whole courses, standard blocks, optional caps, base and behind-wall aggregate, and optional component costs for one straight segmental wall.
Outdoor Projects
Paver Patio and Walkway Calculator
Estimate pavers, whole packages, compacted base, bedding material, joint product, exposed perimeter, and optional component costs.
Measure before ordering
Project planning guides
Project planning guide
How to Measure and Plan a Concrete Project
Build a defensible concrete quantity plan from measured geometry, product yield, an explicit allowance, and supplier confirmation.
Project planning guide
How to Measure a Mulch or Soil Project
Divide a landscape into measurable shapes, choose a finished application depth, and compare whole bags with exact bulk volume.
Project planning guide
How to Plan Gravel for a Driveway Layer
Measure finished driveway geometry while keeping compaction, loose density, delivered weight, and truck capacity as separate facts.
Transparent estimates
See how every answer is produced
Calculate My Project separates exact material requirements from the quantities you actually need to purchase. Unit conversions, waste, rounding, and editable assumptions are documented instead of hidden.
Read the calculation methodology