Construction Calculators
Free professional-grade calculators for estimating materials, costs, and project requirements.
Spray Foam Insulation Cost Calculator
Estimate spray foam material, board feet, and installed cost for commercial walls and roofs. Closed-cell $1.50–$3.50/bf installed; open-cell $0.50–$1.50/bf. Three inputs, defensible bid range with regional adjustment.
Try calculatorEpoxy Flooring Cost Calculator
Estimate epoxy material, prep cost, and total installed cost for commercial floors. Single-coat $3–$5/sf, decorative flake $5–$12/sf, metallic $7–$15/sf. Splits prep cost separately so you can see the real bid.
Try calculatorMetal Building Cost Calculator
Estimate steel kit, foundation, erection, and shipping for commercial pre-engineered metal buildings. Shell-only kits $20–$35/sf; turnkey insulated $50–$80/sf. All four line items separated so kit-only quotes don't mislead.
Try calculatorAsphalt Driveway Calculator
Estimate the cost of your new asphalt driveway project with BidFlow's free calculator. Input dimensions, asphalt/base thickness, site conditions, and cost factors for a detailed estimate.
Try calculatorBrick & Mortar Calculator
Calculate how many bricks and how much mortar you need for walls, patios, and masonry projects with BidFlow's free brick calculator.
Try calculatorConstruction Change Order Markup Calculator
Calculate the total price of a construction change order including direct costs and various markups.
Try calculatorConcrete Calculator
Calculate how many bags of ready mix concrete you need for your construction project with BidFlow's free concrete calculator.
Try calculatorConstruction Loan Interest Calculator
Estimate the interest paid during the construction phase of a loan. For informational purposes only.
Try calculatorDemolition Calculator
Estimate the cost of your demolition project, including labor, debris removal, and disposal.
Try calculatorDrywall Calculator
Calculate how many drywall sheets you need for your construction project with BidFlow's free drywall calculator.
Try calculatorAluminum Fence Calculator
Calculate aluminum fence costs instantly. Free calculator shows materials, posts, gates & labor. See pricing for 100-400 ft projects + avoid hidden costs.
Try calculatorChain Link Fence Calculator
Calculate chain link fence costs instantly. Free calculator for galvanized & vinyl-coated fencing. Budget-friendly estimates for residential and commercial projects.
Try calculatorFence Calculator
Compare fence costs by material instantly. Free calculator shows pricing for wood, vinyl, aluminum, chain link & wrought iron. Get accurate estimates for 100-400 ft projects.
Try calculatorVinyl Fence Calculator
Calculate vinyl fence costs instantly. Free calculator for privacy, semi-privacy & picket styles. Zero maintenance PVC fencing estimates for 100-400 ft projects.
Try calculatorWood Fence Calculator
Calculate wood fence costs instantly. Free calculator for cedar, pine & pressure-treated fencing. See pricing for privacy, picket & board-on-board styles.
Try calculatorWrought Iron Fence Calculator
Calculate wrought iron fence costs instantly. Free calculator for ornamental iron fencing. Premium estate-quality estimates for custom and prefabricated designs.
Try calculatorInsulation Calculator
Calculate insulation material needed for walls, attic, floors, and ceilings. Free insulation calculator helps determine R-values, material quantities, and costs for your construction project.
Try calculatorMulch Calculator
Estimate the amount of mulch needed for your landscaping project with BidFlow's free Mulch Calculator. Calculate by area, depth, and optional waste and cost.
Try calculatorSelf-Leveling Concrete Calculator
Calculate exactly how many bags of self-leveling concrete you need for your project. Free professional calculator with cost estimates, material lists, water requirements, and project timeline.
Try calculatorTile Calculator
Estimate tile quantity and total cost for LVT, large-format porcelain, polished concrete, carpet tile, and residential installs. Waste factor calculated per pattern - straight, diagonal, or herringbone.
Try calculatorWall Construction Calculator
Estimate the cost of your wall construction project, including materials like studs, drywall, and labor.
Try calculatorSquare Footage Calculator
Calculate the square footage of any space - rooms, yards, walls, or irregular shapes. Free online sq ft calculator for construction and home projects.
Try calculatorBoard Foot Calculator
Calculate board feet for lumber purchases. Enter dimensions and quantity to get total board footage and estimated cost for your woodworking or framing project.
Try calculatorAsphalt Calculator
Calculate how much asphalt you need in tons and cubic yards. Estimate material costs for driveways, parking lots, and road projects with our free asphalt calculator.
Try calculatorGrout Calculator
Calculate how much grout you need for your tile project. Enter tile size, joint width, and area to get pounds and bags of grout required.
Try calculatorBathroom Remodel Cost Calculator
Estimate your bathroom remodel cost based on size, scope, and finish selections. Get a detailed cost breakdown for labor, materials, fixtures, and permits.
Try calculatorKitchen Remodel Cost Calculator
Estimate kitchen remodel costs by scope, size, and material selections. Get a detailed breakdown for cabinets, countertops, flooring, appliances, and labor.
Try calculatorWindow Replacement Cost Calculator
Estimate window replacement costs by type, frame material, glass options, and quantity. Includes energy savings estimates and labor vs material breakdown.
Try calculatorHome Addition Cost Calculator
Estimate the cost of a home addition by type, square footage, and finish level. Covers bedrooms, bathrooms, garages, sunrooms, and second story additions.
Try calculatorVinyl Siding Cost Calculator
Estimate vinyl siding costs for your home by wall area, siding grade, and project scope. Includes material, labor, removal, and trim costs.
Try calculatorPaver Patio Cost Calculator
Estimate paver patio costs by size, material, and pattern. Get a breakdown of pavers, base material, labor, and optional sealing costs.
Try calculatorConstruction Bid Price Calculator
Calculate your total bid price with line-item cost breakdown, overhead, profit margin, and contingency. Free bid calculator for contractors.
Try calculatorContractor Profit Margin Calculator
Calculate your gross margin, markup percentage, and break-even point. See if a job is worth taking with color-coded margin health indicators.
Try calculatorContractor Hourly Rate Calculator
Calculate your minimum hourly rate based on salary goals, business expenses, and billable hours. Get daily and weekly rates too.
Try calculatorJob Costing Calculator for Contractors
Compare your bid estimate to actual job costs. See variance by category, margin shift, and whether you made or lost money on the project.
Try calculatorConstruction Project Estimate Builder
Build a detailed project estimate with custom line items, quantities, rates, overhead, and profit. Add, remove, and group costs for a complete bid.
Try calculatorBuilding Permit Cost Calculator
Total permit cost in one estimate: building permit + plan review + zoning + electrical / plumbing / mechanical + fire review. Two-section breakdown, low/best/high range, regional adjustment.
Try calculatorElectrical Permit Cost Calculator
Estimate electrical permit fees by project valuation and type. National baseline adjusted for your region. Range, breakdown, confidence label.
Try calculatorPlumbing Permit Cost Calculator
Estimate plumbing permit fees by fixture count or project valuation. National baseline adjusted for your region.
Try calculatorMechanical Permit Cost Calculator
Estimate HVAC/mechanical permit fees by tonnage or project valuation. National baseline adjusted for your region.
Try calculatorFire Permit Review Cost Calculator
Estimate fire department review fees by project type. Most jurisdictions exempt single-family residential.
Try calculatorDemolition Permit Cost Calculator
Estimate demolition permit fees by structure square footage. Permit fee only - see demolition-cost-estimator for total demolition cost.
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