Builder tools
Home improvement calculators for United States
Every tool uses square feet, USD pricing fields and Sales tax handling, with formulas that are documented and unit-tested.
Project category
Concrete & Masonry
Volume, slab, footing and masonry material calculators.
- Concrete Slab Cost and Volume CalculatorEnter any slab length, width, and thickness to calculate exact cubic yards, a separate allowance, the rounded ready-mix order, and an optional cost from the current supplier price you enter. The 12 × 12 ft example is editable.
- Concrete Volume CalculatorEnter the dimensions of your pour — rectangular or cylindrical — in feet and inches to get the cubic yards of ready-mix to order, with wastage and an optional cost estimate.
- Ready-Mix Concrete Cost Calculator — Complete Quote TotalTurn a current ready-mix concrete supplier quote into an itemised USD supply total while keeping physical volume, billed volume, fees and sales tax separate.
- Concrete Bag Calculator — 40, 50, 60 & 80 lbEnter a known concrete volume or rectangular pad dimensions, then compare up to three exact products using the mixed yield printed on each bag—not bag weight alone.
- Deck Mud Calculator — Square Feet, Thickness & BagsEnter known mortar-bed square footage directly or calculate it from length × width, then add compacted thickness, exact product yield, and allowance to get volume and whole deck-mud bags.
- Post Hole Concrete Calculator — Bags per Fence PostEnter each round hole's diameter and concrete fill depth, subtract the actual post displacement, then convert the project volume into whole bags using the yield printed on your product.
- Retaining Wall Block Calculator with Cap BlocksEnter the approved wall-face run and block-field height plus the exact installed wall-block and cap dimensions to produce separate course and cap takeoffs.
Project category
Flooring & Tile
Flooring, tile and underlay quantity and cost calculators.
- Tile and Grout Calculator with Spacer AllowanceEnter the tiled area, tile size, physical spacer width, tile allowance, and the grout coverage printed for that exact tile and joint combination. The result keeps tile boxes and grout packages as separate rounded shopping-list lines.
- Garage Floor Tile Calculator — Tiles, Packs and Ramp EdgesMeasure one main garage rectangle plus up to two offsets, then calculate exact tile equivalents, whole packs and optional straight ramp-edge pieces for the garage-door opening.
- Flooring CalculatorEnter your room dimensions in feet to get the square footage of flooring to buy, the number of boxes, and an editable cost estimate for vinyl plank or laminate, with a wastage allowance for cuts and spares.
Project category
Painting & Walls
Paint coverage and wall finish calculators.
- Baseboard and Trim Calculator with WasteMeasure the room perimeter or enter a checked wall run, subtract actual no-baseboard openings, add your chosen cut allowance, and round to the stock length sold.
- Paint Calculator for 2 Coats Including CeilingEnter room dimensions in feet, choose two wall and ceiling coats, and get separate gallon and can counts for wall paint and ceiling paint. Door and window deductions apply only to the walls, while each product keeps its own coverage, can size, and optional price.
Project category
Walls & Insulation
Drywall, plasterboard, stud and insulation calculators.
- Drywall Calculator — Sheets, Mud, and TapeMeasure the room once to create a finish-ready material list: whole drywall sheets, linear feet and rolls of tape, gallons and pails of joint compound, plus optional user-priced costs.
- Insulation Calculator — R-Value and Square FeetEnter the area to insulate, the required R-value from your plan, and the selected product's exact R-value and package coverage to get a label check and whole-package quantity.
Project category
Landscaping
Mulch, gravel, soil and outdoor material calculators.
- Paver Calculator — Pavers, Base, and Bedding SandEnter the finished patio size, installed paver dimensions, joint width, excavation margin, and both layer depths to produce a three-line material plan: pavers, crushed-stone base, and bedding sand.
- Landscaping Calculator — Multi-Zone Material PlannerMeasure up to six landscape zones, keep unlike materials separate, and turn supplier coverage or sale increments into an auditable purchase plan.
- Mulch Calculator — Bags vs Bulk CostEnter bed dimensions, mulch depth, bag volume, supplier bulk increment, and optional real prices to compare independently rounded bag and bulk material orders.
- Topsoil Calculator — Cubic Yards for Raised BedsEnter inside bed dimensions, unfilled soil depth, bed count, and supplier units to get exact volume, allowance, cubic-yard order quantity, and optional bag comparison.
- Sod Calculator — Pallets Needed from Square FeetMeasure the lawn, subtract hardscape and beds, enter the selected supplier’s pallet coverage, and get net area, allowance, exact pallets, whole pallets, and spare coverage.
- Gravel CalculatorEnter the area dimensions in feet and the gravel depth in inches to get the cubic yards and US tons to order, with wastage and an optional cost estimate.
Project category
Decks & Fences
Decking, fence post and panel calculators.
- Fence CalculatorEnter one straight fence length or a comma-separated list of section lengths in feet. Each section is rounded independently, joined corners share posts, and optional supplier prices produce a material cost estimate.
- Decking Calculator — Boards, Joists, and ScrewsEnter deck dimensions and the approved board, joist, and fixing layout to get boards, joists, regular board-to-joist screws, whole fastener packs, and optional entered-price cost.
- Deck Stain Calculator — Square Footage and GallonsMeasure the deck floor and any additional stained surfaces, then use the exact product’s coat-specific coverage to calculate liquid volume and whole containers.
- Stair Stringer Calculator — Rise, Run, and PitchEnter finished total rise, the approved maximum riser, and the planned horizontal tread run to lay out a uniform straight-flight geometry without implying structural or code approval.