Fast, transparent calculators for contractors, builders, remodelers, and homeowners. Measure in meters or feet, review the assumptions, and plan materials with confidence.
15
construction calculators
2 systems
Metric and US Customary
0 signup
free to use
The toolbox
Every tool is designed to show a clear quantity estimate before you order materials or request a quote.
Construction
Free concrete slab calculator. Estimate volume, cement bags, and total cost for your slab project instantly.
Open calculatorConstruction
Free concrete footing calculator. Quickly estimate the volume of concrete needed for wall or post footings.
Open calculatorConstruction
Free brick calculator. Calculate the number of bricks needed and total cost for your masonry project instantly.
Open calculatorConstruction
Free concrete column calculator. Estimate concrete volume, cement bags, and steel reinforcement needed for your structural columns.
Open calculatorConstruction
Free paint calculator. Estimate how much paint you need for walls, ceilings, and trim. Get accurate quantities and cost estimates.
Open calculatorConstruction
Free tile calculator. Estimate the number of tiles needed for your floor or wall project. Includes waste factor and cost calculation.
Open calculatorConstruction
Free gravel and sand calculator. Estimate the volume and weight of gravel or sand needed for your landscaping or construction project.
Open calculatorConstruction
Free lumber calculator. Estimate the amount of wood (board feet) needed for your construction or woodworking project.
Open calculatorPaving
Calculate asphalt paving material requirements for driveways, parking lots, and road surfaces.
Open calculatorInterior
Calculate drywall sheets, joint compound, tape, and fasteners needed for interior wall and ceiling projects.
Open calculatorConcrete
Calculate concrete volume and material requirements for retaining walls of any height and length.
Open calculatorRoofing
Calculate roofing material requirements including shingles, underlayment, and labor costs for residential and commercial roofs.
Open calculatorConstruction
Calculate stair dimensions, rise, run, and material requirements for residential and commercial stairs.
Open calculatorStructural Materials
Estimate reinforcing bar quantity, total length, steel weight, stock bars, and material cost for a rectangular concrete slab grid.
Open calculatorStructural Engineering
Estimate service load, factored load, and equal support reactions from tributary area, dead load, and live load assumptions.
Open calculatorDesigned for practical estimates
StructoCalc is built around the questions that slow down a job: how much material, which unit, and what should be checked before ordering? The interface stays simple while the calculation engine handles the conversions.
01
See the dimensions and assumptions behind each estimate.
02
Switch between Metric and US Customary without duplicate pages.
03
Use the result as a planning check before a supplier quote.
Field Notes
Our construction guides explain how to measure, convert, add practical allowances, and communicate your estimate to a supplier or contractor.
Explore the guides →Latest field notes
Field Notes
Practical estimating guidance
Aug 16, 2026
A source-backed guide to using manufacturer product data when planning ceramic, porcelain, natural-stone, or mosaic tile purchases.
Read the guideField Notes
Practical estimating guidance
Aug 16, 2026
A source-backed guide to reading paint product data, estimating coverage, and confirming surface preparation and coating requirements.
Read the guideField Notes
Practical estimating guidance
Aug 16, 2026
A professional guide to the leading staircase component brands, focusing on wood and metal parts, spiral kits, and building code compliance.
Read the guideReady when you are
Pick a calculator, enter your dimensions, and keep the result close to the project plan. StructoCalc is free and does not require an account.
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