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Gallons and cans for the walls of a room from its size, openings, coats and coverage. See the full page.

Ceiling paint by room size and texture, from smooth to popcorn, rounded to cans. See the full page.

Quarts of trim enamel for baseboards, crown, door and window casings. See the full page.

Paint for a set of doors by style, size, sides and coats. See the full page.

Quarts for window frames, casings and sashes by window size and count. See the full page.

Paint, tinted primer and sample pots for one feature wall, with extra coats for dark colours. See the full page.

Primer gallons by surface: new drywall, patches, colour changes, glossy or stained walls. See the full page.

Wall, ceiling and trim paint for a whole house from a count of rooms by size, with optional prices. See the full page.

Primer and enamel for cabinet doors, drawer fronts and face frames, brushed or sprayed. See the full page.

Paint for up to four tall or sloping walls, with a warning when the height needs a scaffold. See the full page.

Gallons and pails for a house from its perimeter, storeys, gables, openings and siding type. See the full page.

Stain or paint for a fence by length, height, sides, style and product, with rough-wood coverage. See the full page.

Deck stain for the boards, railings and steps, by wood condition and product. See the full page.

Paint for single, double or custom garage doors by style, with the frame trim. See the full page.

Paint for fascia, soffits, rakes, corner boards and the trim around doors and windows. See the full page.

Acrylic masonry paint or elastomeric by texture, with the primer, in gallons and pails. See the full page.

Rust primer and enamel for iron railings and gates, by openness, in quarts or spray cans. See the full page.

Elastomeric, silicone or aluminium roof coating from the roof area and pitch, in 5-gallon pails. See the full page.

Floor enamel or anti-slip paint for a porch, patio or steps, with the primer. See the full page.

Siding and trim paint for a shed, garage or barn from its size, gables, openings and siding. See the full page.

What the paint, primer and supplies cost for a job, with tax, per gallon and per square foot. See the full page.

A low-to-high estimate of what painters charge for rooms, an interior or an exterior, by prep and region. See the full page.

The cash saving from painting it yourself, the hourly value where it breaks even, and a verdict. See the full page.

Hours and working days for a job from the areas, the method, the coats, the prep and the crew. See the full page.

Turn a quote into a price per square foot of wall or floor and compare it with published ranges. See the full page.

An itemised list of rollers, brushes, tape, drop cloths and sundries for the job, with a cost. See the full page.

What to keep for touch-ups, what to return or give away, and how to store or dispose of the rest. See the full page.

Area a quantity of paint covers, or paint for an area, with a texture factor and coats. See the full page.

Paintable area of up to six walls and a ceiling, with the openings subtracted, in sq ft and m². See the full page.

Gallons, quarts, pints, fluid ounces, litres and millilitres, converted exactly and rounded to cans. See the full page.

How many coats a colour change takes, whether to prime, and how much extra paint that means. See the full page.

Theoretical and practical coverage from volume solids and dry film thickness, the way pros spec it. See the full page.

How much water or thinner to add for a given percentage, and whether it is within the label limit. See the full page.

Paint and cost by roller and by airless sprayer for the same job, with the overspray shown. See the full page.

The cheapest mix of pails, gallons and quarts (or litre cans) for the paint you need at your prices. See the full page.

What a quantity of paint weighs with its cans, the trips to carry it, or the paint left in a can by weight. See the full page.

How many sample pots to test your colours with proper patches, and what they cost. See the full page.

Rolls by drops, with the pattern repeat, the match and US double or European roll sizes. See the full page.

Ready-mixed paste, powder packets or paste-the-wall adhesive for your rolls, plus wall primer. See the full page.

Rolls, paste, primer, removal and installation priced together, per room and per square foot. See the full page.

Rolls or panels of self-adhesive wallpaper for a wall, with the overlap and repeat counted. See the full page.

Hours and cost to strip old wallpaper by type, layers and method, with the wall repair after. See the full page.

Spools of border for a room at the ceiling or chair-rail height, with corners and waste. See the full page.

Floor paint, one-part epoxy or sealer for concrete, with the etch and primer for bare slabs. See the full page.

Two-part epoxy kits, decorative flakes and clear topcoat for a garage or basement floor. See the full page.

Penetrating or film-forming sealer for brick, block, pavers and concrete by porosity and coats. See the full page.

Stain, conditioner and clear finish for furniture, doors and woodwork, measured as boxes or by area. See the full page.

Polyurethane or hardwax oil for a wood floor by finish type and coats, with the sealer coat. See the full page.

Chalk paint, enamel or spray cans for a dresser, table or cabinet, measured as a box with its doors. See the full page.

Block filler for concrete block walls by texture, in gallons and pails, before the topcoat. See the full page.

Heat-resistant paint for panel, column or baseboard radiators, by brush or spray can. See the full page.

Gallons through the gun with overspray and thinning, spraying minutes from the tip flow, and buckets. See the full page.

The airless tip number for your material and fan width, its flow, and whether your pump can run it. See the full page.

Hours per task from your production rates and the job conditions, with crew days and hours per 100 sq ft. See the full page.

A bid from labour, materials, markup, overhead and profit margin, with the price per square foot. See the full page.

Touch-dry, recoat and cure times by product, adjusted for temperature, humidity and airflow. See the full page.

Working days and a finish date from the hours, the crew, recoat waits and the working week. See the full page.

Price, markup, margin and profit from any two of them, with the conversion between the two percentages. See the full page.

The sheen for a room or surface from traffic, moisture, wall condition and what matters most to you. See the full page.

How much of each paint to mix for a ratio and a total, or how much to add to what you have. See the full page.

Paint for each colour of a wall split at chair-rail height, with the openings shared out and the tape. See the full page.

Stripe count and true width for a wall, paint for the base and the stripes, and the tape. See the full page.

The same room painted and papered, side by side, with materials and optional labour. See the full page.

Hours, working days, a finish date and a day-by-day room order for a whole-house paint job. See the full page.