Calculators
Square Footage Calculator
Area for rooms and yards in any shape — rectangles, circles, triangles, L-shapes — with conversions and a project total.
CalculatorGravel Calculator
Cubic yards and tons of gravel, crushed stone or river rock for driveways and paths, with cost.
CalculatorConcrete Slab Calculator
Cubic yards and bag counts for slabs and pads, with ready-mix vs bag cost comparison.
CalculatorPaint Calculator
Gallons of paint and primer for any room, minus doors and windows, times your coats — with cost.
CalculatorRoofing Calculator
Shingle squares and bundles from footprint and pitch, with underlayment and ridge cap.
CalculatorTopsoil Calculator
Topsoil in cubic yards, tons and bags for beds, lawns and grading — settling allowance included.
CalculatorDrywall Calculator
Drywall sheets for any room, plus the mud, tape and screws to finish them — at published estimating rates.
CalculatorTile Calculator
Tiles and boxes for floors and walls from your area and tile size, waste included.
CalculatorDecking Calculator
Deck boards, joists and screws for wood or composite — board width, gap and spacing accounted for.
CalculatorBrick Calculator
Bricks for any wall by brick size and joint width, plus the mortar bags to lay them.
CalculatorFlooring Calculator
Boxes of vinyl, laminate or hardwood for your room, with the right waste factor for each material.
CalculatorMulch Calculator
Mulch in bags or bulk yards — both counts, both prices, and the break-even point.
Remodeling costs
What projects actually get filed at in Seattle — medians computed from real building permits issued in the last 24 months, updated as new permits land.
Kitchen Remodel Cost in Seattle
Median $50,000 from 140 real permits.
Cost GuideBathroom Remodel Cost in Seattle
Median $28,000 from 130 real permits.
Cost GuideDeck Build Cost in Seattle
Median $22,193 from 404 real permits.
Cost GuideHouse Addition Cost in Seattle
Median $150,000 from 884 real permits.
Cost GuideADU / DADU Cost in Seattle
Median $183,517 from 437 real permits.
Cost GuideBasement Finish Cost in Seattle
Median $50,000 from 31 real permits.
Cost IndexAll Seattle Remodeling Costs
Every project type with at least 30 permits behind it.
How we calculate
Most calculator sites give you a bare number. Ours work like a contractor's takeoff: measure the area, apply the coverage or yield printed by the manufacturer, add an honest waste factor for cuts and mistakes, and round up to whole purchasable units — bags, boxes, sheets, gallons. Where a rate comes from a published standard (USG's drywall estimating figures, Quikrete's bag yields, ASTM joint sizes), the page says so. Prices are editable defaults, never fake precision: change them to your store's shelf prices and the totals follow.
In the works
- Grout calculator — How much grout for your tile size, joint width and area.
- Mortar calculator — Bags of mortar mix for brick and block work.
- Soil calculator — Topsoil and garden soil volumes, bags vs bulk.
- Fill dirt calculator — Cubic yards and tons of fill dirt for grading and holes.
- Sand calculator — Sand for pavers, pools and concrete, by weight and volume.
- Insulation calculator — Batts, rolls and blown-in insulation by area and R-value.
- Board foot calculator — Board feet for lumber projects and hardwood orders.
- Carpet calculator — Carpet yardage, padding and tack strips by room.
- Sod calculator — Pallets and rolls of sod for your lawn area.
- Paver calculator — Pavers, base gravel and bedding sand for patios.
- Asphalt calculator — Tonnage for driveways and patches.
- Stair calculator — Rise, run, stringer length and step counts to code.
- Concrete block calculator — CMU block counts, mortar and fill.
- Countertop calculator — Square footage for stone and laminate quotes.
- Pool volume calculator — Gallons for any pool shape.
- BTU calculator — Heating and cooling load estimates by room.
Built next, in search-demand order — the same material engine, more trades.
About the author
Harrison Alley is a web publisher and data enthusiast based in Dallas, Texas. He built Urbarama’s remodeling calculators and maintains them.
Harrison Alley on LinkedIn