Construction calculator suite
Estimate materials before money leaves the truck.
Fast calculators for concrete, roofing, landscaping, and area takeoffs, with formulas and assumptions shown on every tool page.
Project starting points
Choose the estimate that matches the job.
Each category starts with the measurement contractors and DIY builders usually need first: volume, area, slope, depth, or bag count.
8 calculators Concrete Calculators Estimate concrete volume, bags, footings, slabs, and rebar. Start with Concrete Calculator 7 calculators Roofing Calculators Calculate roof pitch, roof area, and roofing materials. Start with Roof Pitch Calculator 10 calculators Landscaping Calculators Plan mulch, gravel, soil, sod, and paver projects. Start with Mulch Calculator 5 calculators Area Calculators Calculate square footage, cubic yards, board feet, and layout quantities. Start with Square Footage Calculator
Tool directory
Popular calculators
Start with the material that drives the job, then use related calculators to refine the estimate.
Concrete Calculators Concrete Calculator Estimate concrete volume, cubic yards, bags, weight, and cost for slabs, walls, footings, and post holes. concrete calculator Roofing Calculators Roof Pitch Calculator Convert rise and run into roof pitch, angle, slope percentage, rafter length, and pitch multiplier. roof pitch calculator Landscaping Calculators Mulch Calculator Calculate cubic yards, cubic feet, bags, coverage, and cost for mulch beds and landscaping projects. mulch calculator Landscaping Calculators Gravel Calculator Estimate gravel cubic yards, tons, and cost for driveways, paths, patios, and landscape beds. gravel calculator Area Calculators Square Footage Calculator Calculate square footage for rooms, walls, yards, circles, triangles, and multi-area projects. square footage calculator Concrete Calculators Concrete Slab Calculator Estimate cubic yards, cubic feet, bags, weight, and cost for a concrete slab by size and thickness. concrete slab calculator Concrete Calculators Concrete Bag Calculator Calculate how many 40, 50, 60, or 80 lb concrete bags you need for slabs, footings, and post holes. concrete bag calculator Concrete Calculators 80 lb Concrete Bag Calculator Estimate how many 80 lb bags of concrete mix are needed for a slab, footing, wall, or post hole. 80 lb concrete bag calculator Concrete Calculators Concrete Footing Calculator Estimate concrete volume and bags for continuous footings by length, width, depth, quantity, and waste. concrete footing calculator Concrete Calculators Post Hole Concrete Calculator Estimate concrete for round post holes by diameter, depth, quantity, bag size, and waste factor. post hole concrete calculator Concrete Calculators Concrete Cubic Yards Calculator Convert concrete project dimensions into cubic yards for ready-mix ordering and material planning. concrete cubic yards calculator Concrete Calculators Concrete Cost Calculator Estimate ready-mix and bagged concrete cost from project dimensions, cubic yards, bag size, and local unit prices. concrete cost calculator Roofing Calculators Roof Pitch to Degrees Calculator Convert roof pitch such as 4:12, 6:12, or 12:12 into degrees, slope percentage, and multiplier. roof pitch to degrees calculator Roofing Calculators Roof Area Calculator Estimate sloped roof surface area from footprint size, roof pitch, pitch multiplier, and waste percentage. roof area calculator Roofing Calculators Roofing Material Calculator Estimate roofing squares, shingle bundles, underlayment rolls, roof area, waste, and material cost. roofing material calculator Roofing Calculators Rafter Length Calculator Estimate rafter length from rise and run while also checking roof pitch, angle, and pitch multiplier. rafter length calculator Roofing Calculators Roof Slope Calculator Calculate roof slope percentage, pitch ratio, degrees, rafter length, and pitch multiplier. roof slope calculator Roofing Calculators Roof Pitch Multiplier Calculator Find the roof pitch multiplier used to convert flat roof footprint into sloped roof surface area. roof pitch multiplier calculator Landscaping Calculators Mulch Depth Calculator Estimate mulch volume and coverage for 2, 3, or 4 inch depth across beds and landscape areas. mulch depth calculator Landscaping Calculators Mulch Bags Calculator Calculate how many mulch bags you need based on area, depth, bag size, and waste. mulch bags calculator Landscaping Calculators Bulk Mulch Calculator Estimate cubic yards and bulk cost for mulch delivery across beds, tree rings, and landscape areas. bulk mulch calculator Landscaping Calculators Gravel Tons Calculator Convert gravel volume into estimated tons using material density, depth, area, and waste factor. gravel tons calculator Landscaping Calculators Driveway Gravel Calculator Estimate gravel cubic yards, tons, and cost for driveway top layers and base layers. driveway gravel calculator Landscaping Calculators Pea Gravel Calculator Estimate pea gravel cubic yards, tons, and cost for paths, patios, play areas, and landscape beds. pea gravel calculator Landscaping Calculators River Rock Calculator Estimate river rock cubic yards, tons, and cost for dry creek beds, landscape borders, paths, and decorative areas. river rock calculator Landscaping Calculators Crushed Stone Calculator Estimate crushed stone cubic yards, tons, and cost for bases, paths, patios, drainage, and compacted layers. crushed stone calculator Area Calculators Room Square Footage Calculator Calculate room square footage for flooring, paint planning, HVAC estimates, and renovation takeoffs. room square footage calculator Area Calculators Wall Square Footage Calculator Estimate wall square footage from length and height for paint, drywall, paneling, and insulation planning. wall square footage calculator Area Calculators Yard Square Footage Calculator Calculate yard, lawn, or landscape area in square feet for mulch, sod, seed, gravel, and soil planning. yard square footage calculator Area Calculators Square Yards Calculator Convert square feet to square yards while estimating area for rooms, yards, flooring, and landscape projects. square yards calculator
Built for search quality
Each tool page can stand on its own.
Calculator first. The working tool appears before long article content so visitors get value immediately.
Content with purpose. Formula, assumptions, examples, and FAQs support the calculation instead of padding the page.
Ad-safe layout. Ad placements are labeled and separated from input controls.
How to use the estimates
Measure, calculate, then verify before ordering.
- Measure in the same units. Enter feet, inches, depth, pitch, or area as requested by the calculator.
- Review the assumptions. Check waste percentage, material density, bag yield, or pitch multiplier before trusting the final number.
- Compare against supplier rules. Local suppliers may round bags, tons, cubic yards, rolls, or delivery minimums differently.
- Use the result as a planning estimate. Confirm code requirements, installation details, and final quantities before buying materials.