All Paints Calculator calculators
Pick the question you are trying to answer. Each calculator shows its formula, lists its assumptions and prints the arithmetic so you can check the result.
Interior painting
How much wall, ceiling, trim, door and cabinet paint a room or a whole house takes.
Wall Paint Calculator
Gallons and cans for the walls of a room from its size, openings, coats and coverage.
Ceiling Paint Calculator
Ceiling paint by room size and texture, from smooth to popcorn, rounded to cans.
Trim & Baseboard Paint Calculator
Quarts of trim enamel for baseboards, crown, door and window casings.
Door Paint Calculator
Paint for a set of doors by style, size, sides and coats.
Window Frame & Sash Paint Calculator
Quarts for window frames, casings and sashes by window size and count.
Accent Wall Paint Calculator
Paint, tinted primer and sample pots for one feature wall, with extra coats for dark colours.
Primer Calculator
Primer gallons by surface: new drywall, patches, colour changes, glossy or stained walls.
Whole-House Interior Paint Estimator
Wall, ceiling and trim paint for a whole house from a count of rooms by size, with optional prices.
Kitchen Cabinet Paint Calculator
Primer and enamel for cabinet doors, drawer fronts and face frames, brushed or sprayed.
Stairwell & Tall Wall Paint Calculator
Paint for up to four tall or sloping walls, with a warning when the height needs a scaffold.
Exterior & staining
Siding, trim, fences, decks, garage doors, masonry and roofs, with the extra that rough surfaces drink.
Exterior House Paint Calculator
Gallons and pails for a house from its perimeter, storeys, gables, openings and siding type.
Fence Stain & Paint Calculator
Stain or paint for a fence by length, height, sides, style and product, with rough-wood coverage.
Deck Stain Calculator
Deck stain for the boards, railings and steps, by wood condition and product.
Garage Door Paint Calculator
Paint for single, double or custom garage doors by style, with the frame trim.
Exterior Trim, Fascia & Soffit Paint Calculator
Paint for fascia, soffits, rakes, corner boards and the trim around doors and windows.
Stucco & Masonry Paint Calculator
Acrylic masonry paint or elastomeric by texture, with the primer, in gallons and pails.
Metal Railing & Gate Paint Calculator
Rust primer and enamel for iron railings and gates, by openness, in quarts or spray cans.
Roof Coating Calculator
Elastomeric, silicone or aluminium roof coating from the roof area and pitch, in 5-gallon pails.
Porch & Patio Floor Paint Calculator
Floor enamel or anti-slip paint for a porch, patio or steps, with the primer.
Shed & Outbuilding Paint Calculator
Siding and trim paint for a shed, garage or barn from its size, gables, openings and siding.
Cost, hiring & time
What the paint costs, what painters charge, how long the job takes and whether to do it yourself.
Paint Cost Calculator
What the paint, primer and supplies cost for a job, with tax, per gallon and per square foot.
Professional Painter Cost Estimator
A low-to-high estimate of what painters charge for rooms, an interior or an exterior, by prep and region.
DIY vs Hire a Painter Calculator
The cash saving from painting it yourself, the hourly value where it breaks even, and a verdict.
Painting Time Calculator
Hours and working days for a job from the areas, the method, the coats, the prep and the crew.
Painting Cost per Square Foot Calculator
Turn a quote into a price per square foot of wall or floor and compare it with published ranges.
Painting Supplies Calculator
An itemised list of rollers, brushes, tape, drop cloths and sundries for the job, with a cost.
Leftover Paint & Touch-Up Planner
What to keep for touch-ups, what to return or give away, and how to store or dispose of the rest.
Coverage & conversions
The arithmetic every other calculator relies on: square footage, coverage rates, coats, cans and units.
Paint Coverage Calculator
Area a quantity of paint covers, or paint for an area, with a texture factor and coats.
Wall Square Footage Calculator
Paintable area of up to six walls and a ceiling, with the openings subtracted, in sq ft and m².
Paint Quantity Converter
Gallons, quarts, pints, fluid ounces, litres and millilitres, converted exactly and rounded to cans.
How Many Coats Calculator
How many coats a colour change takes, whether to prime, and how much extra paint that means.
Spread Rate & Film Thickness Calculator
Theoretical and practical coverage from volume solids and dry film thickness, the way pros spec it.
Paint Thinning Calculator
How much water or thinner to add for a given percentage, and whether it is within the label limit.
Spray vs Roll Paint Usage Calculator
Paint and cost by roller and by airless sprayer for the same job, with the overspray shown.
Can Size Optimizer
The cheapest mix of pails, gallons and quarts (or litre cans) for the paint you need at your prices.
Paint Weight Calculator
What a quantity of paint weighs with its cans, the trips to carry it, or the paint left in a can by weight.
Sample Pot Calculator
How many sample pots to test your colours with proper patches, and what they cost.
Wallpaper
Rolls, paste, borders, peel-and-stick and removal, with pattern repeat and roll sizes done properly.
Wallpaper Roll Calculator
Rolls by drops, with the pattern repeat, the match and US double or European roll sizes.
Wallpaper Paste Calculator
Ready-mixed paste, powder packets or paste-the-wall adhesive for your rolls, plus wall primer.
Wallpaper Cost Calculator
Rolls, paste, primer, removal and installation priced together, per room and per square foot.
Peel-and-Stick Wallpaper Calculator
Rolls or panels of self-adhesive wallpaper for a wall, with the overlap and repeat counted.
Wallpaper Removal Time & Cost Calculator
Hours and cost to strip old wallpaper by type, layers and method, with the wall repair after.
Wallpaper Border Calculator
Spools of border for a room at the ceiling or chair-rail height, with corners and waste.
Floors, wood & specialty
Concrete, epoxy, sealer, wood stain, floor finish, furniture and metal: coverage by surface, not by can.
Concrete & Garage Floor Paint Calculator
Floor paint, one-part epoxy or sealer for concrete, with the etch and primer for bare slabs.
Epoxy Floor Kit Calculator
Two-part epoxy kits, decorative flakes and clear topcoat for a garage or basement floor.
Masonry & Brick Sealer Calculator
Penetrating or film-forming sealer for brick, block, pavers and concrete by porosity and coats.
Wood Stain & Finish Calculator
Stain, conditioner and clear finish for furniture, doors and woodwork, measured as boxes or by area.
Hardwood Floor Finish Calculator
Polyurethane or hardwax oil for a wood floor by finish type and coats, with the sealer coat.
Furniture Paint Calculator
Chalk paint, enamel or spray cans for a dresser, table or cabinet, measured as a box with its doors.
Concrete Block Filler Calculator
Block filler for concrete block walls by texture, in gallons and pails, before the topcoat.
Radiator & Metal Panel Paint Calculator
Heat-resistant paint for panel, column or baseboard radiators, by brush or spray can.
Sprayers, estimating & bidding
Sprayer usage, tip sizes, production rates, drying windows and the maths of a bid.
Airless Sprayer Paint Usage Calculator
Gallons through the gun with overspray and thinning, spraying minutes from the tip flow, and buckets.
Spray Tip Size Calculator
The airless tip number for your material and fan width, its flow, and whether your pump can run it.
Painting Production Rate Calculator
Hours per task from your production rates and the job conditions, with crew days and hours per 100 sq ft.
Painting Bid Builder
A bid from labour, materials, markup, overhead and profit margin, with the price per square foot.
Paint Drying & Recoat Time Calculator
Touch-dry, recoat and cure times by product, adjusted for temperature, humidity and airflow.
Crew & Schedule Calculator
Working days and a finish date from the hours, the crew, recoat waits and the working week.
Markup vs Margin Calculator
Price, markup, margin and profit from any two of them, with the conversion between the two percentages.
Colour, finish & planning
Sheen, mixing, two-tone walls, stripes, paint versus wallpaper and the calendar.
Paint Sheen Selector
The sheen for a room or surface from traffic, moisture, wall condition and what matters most to you.
Paint Mixing Ratio Calculator
How much of each paint to mix for a ratio and a total, or how much to add to what you have.
Two-Tone & Wainscot Wall Paint Calculator
Paint for each colour of a wall split at chair-rail height, with the openings shared out and the tape.
Striped Wall Calculator
Stripe count and true width for a wall, paint for the base and the stripes, and the tape.
Paint vs Wallpaper Cost Comparison
The same room painted and papered, side by side, with materials and optional labour.
Painting Project Planner
Hours, working days, a finish date and a day-by-day room order for a whole-house paint job.