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ProjectCalcs

79 free calculators · no sign-up · built for real projects

Job-site math, measured twice for you.

Measure it. Count it. Build it. Material takeoffs, planning worksheets, and pricing tools for homeowners, serious DIYers, remodelers, contractors, and property investors. Live diagrams make inputs easier to check, with quantities you can shop in one tap.

Concrete Calculator →Browse all

Find your calculator

Search by trade, material, or project, or open a category to compare every related tool in one place.

79 calculators available

Mechanical & Electrical3
AC Size & BTU CalculatorUse the ENERGY STAR room-AC table and its published adjustments.Electrical Load CalculatorA transparent 2023 NEC 220.82 planning worksheet—not panel selection.HVAC Planning Index CalculatorA transparent early planning index—not an equipment-sizing result.
Concrete & Masonry12
Asphalt CalculatorHot-mix tons, gravel base, truck loads, and project cost.Brick & Block CalculatorBrick or CMU units, mortar, pallets, openings, ties, weight, and cost.Concrete CalculatorConcrete volume, bags, ready-mix rounding, base, and costs for seven shapes.Concrete Bags CalculatorConvert a slab or project volume into whole bags and cost.Concrete Block Fill CalculatorEstimate grout volume and bag counts for partially or fully filled concrete block walls.Concrete Footing CalculatorConcrete yards, bags, and cost for continuous or repeated footings.Concrete Stairs CalculatorCalculate concrete volume, bags, and cost for straight monolithic steps and an optional landing.Concrete Weight CalculatorEstimate concrete weight and payload loads from volume, dimensions, and editable density.Mortar CalculatorMortar volume, bags, and cost for brick and block walls.Rebar CalculatorGrid bar counts, stock lengths, weight, and cost from a specified layout.Retaining Wall CalculatorBlocks, caps, gravel, drainage, weight, and cost for segmental walls.Sonotube Concrete CalculatorConcrete volume and bags for round form tubes and columns.
Exterior & Outdoor36
Asphalt Sealer CalculatorEstimate driveway sealer gallons, pails, crack filler, and optional material cost.Baluster Spacing CalculatorLay out equal guard gaps and estimate balusters, spares, and fasteners.Board & Batten Siding CalculatorPlan vertical boards or panels, batten lines, stock rounding, fasteners, waste, and cost.Concrete Driveway Cost CalculatorPlan a concrete driveway budget range with visible material, labor, base, and contingency assumptions.Deck Board Material CalculatorDeck boards, border stock, fasteners, waste, and optional cost.Deck Cost CalculatorDeck framing, boards, footings, guards, stairs, packages, and cost.Deck Stairs CalculatorPlan deck-stair geometry, stringer stock, tread boards, fasteners, and cost.Excavation & Fill CalculatorCut or fill volume, loose yards, weight, truck loads, fabric, hauling, and cost.Fence CalculatorPosts, rails, pickets, gates, concrete, fasteners, and editable cost.Fence Post Depth CalculatorCompare entered embedment criteria and plan post stock, holes, gravel, and cost.Fence Post Hole Concrete CalculatorConcrete bags around fence posts, with post displacement and gravel.Firewood CalculatorCords from any stack, a seller price check, and heat value by species.French Drain CalculatorDrain gravel, perforated pipe, fabric, excavation, fall, and cost.Garage Cost CalculatorBuild an attached or detached garage planning range from size, stories, finish, doors, electrical work, and site allowances.Grass Seed CalculatorEstimate seed pounds and bags for a new lawn or overseeding project.Gravel CalculatorTons of gravel by material, with compaction and truck-load planning.Gutter & Downspout CalculatorGutter pieces, hangers, fittings, downspouts, runoff planning, and cost.Gutter Size CalculatorCompare roof runoff with editable gutter and downspout capacities before building an inventory.Home Addition Cost CalculatorBuild a transparent addition planning range from floor area, foundation, rooms, systems, site work, and contingency.Ice & Water Shield CalculatorPlan self-adhering roof membrane zones, effective roll coverage, waste, rolls, and cost.Landscape Materials CalculatorMulch, soil, gravel, and sand by bags, cubic yards, tons, and cost.Metal Roofing CalculatorPlan metal roof panels, cut lengths, trim, fasteners, waste, and cost.Mulch CalculatorCubic yards and bags of mulch, with a live bag-vs-bulk price check.Paver Base CalculatorBase tons and yards, bedding sand, pavers, excavation, and cost.Pavers CalculatorPavers and pallets plus base, sand, edging, fabric, delivery weight, and cost.Roof Replacement Cost CalculatorPlan a roof replacement range with visible, editable cost assumptions.Roof Sheathing CalculatorConvert roof footprint and pitch into whole sheathing sheets, clips, waste, and cost.Roofing CalculatorGable-roof squares, bundles, underlayment, edge materials, and editable cost.Roofing Materials CalculatorEstimate shingles, squares, underlayment, nails, waste, and cost.Siding CalculatorSiding squares, cartons or pieces, housewrap, trim, fasteners, and cost.Siding Cost CalculatorCreate a low, expected, and high siding budget from visible editable rates.Sod CalculatorPallets, pieces, and cost for a new sod lawn.Soil CalculatorSoil yards, bags, weight, allowance, and bulk-versus-bag cost.Stairs & Stringers CalculatorRisers, treads, run, angle, stringer stock, board cuts, waste, and cost.Vinyl Siding CalculatorPlan vinyl siding cartons, courses, starter, J-channel, corners, fasteners, and cost.Window Replacement Cost CalculatorCreate a transparent window replacement planning range by window, installation scope, access, and finish work.
Interior Finishing18
Backsplash Tile CalculatorTurn countertop runs and backsplash height into tile boxes, setting materials, trim, and cost.Baseboard & Trim CalculatorRoom-by-room baseboard, casing, crown, stock lengths, supplies, and cost.Bathroom Remodel Cost CalculatorBuild a transparent bathroom remodel budget range by project category.Cabinet Door Size CalculatorTurn a full row of cabinet openings into a finished cut list, hinge and pull count, and optional 5-piece door math.Carpet CalculatorLay out broadloom rolls and estimate pad, tack strip, seams, and cost.Countertop CalculatorCountertop square footage, slab count, and material cost from your runs.Drywall CalculatorSheet count with waste, plus screws, mud, tape, and corner bead.Flooring CalculatorBoxes or carpet roll layout, waste, underlayment, trim, supplies, and cost.Insulation CalculatorLabel-based package quantities with a verified 2021 IECC attic starting point.Kitchen Remodel Cost CalculatorBuild a transparent kitchen remodeling range by measured finish quantities and editable scope assumptions.Paint CalculatorGallons of paint and primer per room, plus tape, rollers, and cloths.Plywood & Sheathing CalculatorConvert project area into whole plywood or sheathing sheets and optional cost.Shiplap CalculatorEstimate shiplap boards, installed coverage, fasteners, waste, and cost.Thinset CalculatorEstimate thinset bags from tile area, trowel coverage, substrate, and waste.Tile CalculatorTile count, boxes, thinset, and grout by tile size and joint width.Wainscoting CalculatorPlan wainscot panels, planks, rails, battens, adhesive, and cost.Wall Framing CalculatorStuds, plates, openings, blocking, sheathing, fasteners, waste, and cost.Wallpaper CalculatorDouble rolls with honest pattern-repeat and strip math.
Measurement & Layout7
Board Feet CalculatorLumber tally in board feet with quarters thickness, pricing, and waste.Drainage Slope CalculatorCalculate drainage fall, slope percent, ratio, angle, and stock pipe length without assuming a universal target.Lumber CalculatorEstimate boards, board feet, linear feet, weight, waste, and cost.Rafter Length CalculatorCalculate common-rafter geometry from span, pitch, ridge, and overhang.Roof Area CalculatorQuickly convert a roof footprint and pitch into sloped area and squares.Roof Pitch CalculatorPitch, angle, slope percent, pitch factor, rafter, and ridge height.Square Footage CalculatorAdd and subtract multiple shapes, with square-yard, meter, and acre conversions.
Pricing & Investment3
Contractor Job Pricing CalculatorTurn materials, burdened labor, overhead, and profit goals into a customer price.Lawn Care Pricing CalculatorAuditable per-visit pricing from editable time, cost, coverage, and profit assumptions.Rental ROI CalculatorTransparent pre-tax cash flow, cap rate, cash-on-cash, and DSCR planning.

Browser-local project workspace

Measure a room once. Reuse it across the finish work.

Save room dimensions, ceiling height, doors, and windows, then open prefilled Paint, Drywall, Flooring, or Trim estimates. Add each room's result to one combined shopping list without an account or cloud upload.

Start a room plan →
  1. 01

    Save the geometry

    Feet, inches, and fractions work like the tape in your hand.

  2. 02

    Open a prefilled trade

    Reuse the room while keeping product coverage and waste editable.

  3. 03

    Combine the order

    Matching materials sum across named rooms with their sources still visible.

Plan beyond one number

Connected project workflows

Follow the calculators in job order so excavation, supporting materials, delivery, finish work, and pricing do not fall between separate estimates.

All project workflows →
4 connected steps

Plan a Paver Patio →

Plan patio excavation, paver base, sand, pavers, edging, delivery weight, landscape tie-ins, and a contractor-ready project price.

6 connected steps

Frame & Finish a Room →

Plan wall framing, insulation, drywall, paint, flooring, baseboard, trim, materials, supplies, and contractor pricing in one workflow.

4 connected steps

Replace House Siding →

Plan siding areas, gables, openings, cartons or boards, wrap, trim, flashing, paint, disposal, access, labor, and project pricing.

3 connected steps

Pour a Concrete Slab →

Plan slab excavation, base, concrete yards or bags, forms, reinforcement allowances, delivery, labor, equipment, and contractor pricing.

4 connected steps

Build a Retaining Wall →

Plan retaining-wall excavation, blocks, caps, base and drainage aggregate, fabric, pipe, backfill, delivery weight, and job pricing.

4 connected steps

Upgrade Roof Drainage →

Plan roof area, gutter runs, downspouts, fittings, extensions, drainage stone, grading, excavation, supplies, and contractor pricing.

5 connected steps

Plan a Gravel or Asphalt Driveway →

Measure a driveway, plan excavation and base, compare gravel or asphalt quantities, estimate truck loads, and build a complete contractor price.

5 connected steps

Refresh Landscape Beds and Lawn →

Measure beds and lawn, compare mulch bags or bulk delivery, plan decorative gravel or sod, estimate loads, and price the complete landscape job.

Assumptions shown

Each estimate exposes its coverage rates, waste factors, and planning assumptions. Code references are starting points — always verify the adopted local edition and project conditions.

A live visual check

Calculators with live diagrams redraw as you type so swapped dimensions and unusual proportions are easier to spot before ordering. A diagram supports review; it is not a construction drawing.

From result to receipt

Material takeoffs with shopping outputs show estimated quantities and retailer links. Add supported estimates to one browser-local project list, then copy or print the merged order after verifying product specifications, current price, and availability.