Painting
Paint Calculator: How Much Paint Do You Need for a Room?
Enter your room size and get gallons or liters of paint for the walls and ceiling, with doors, windows and coats already taken off.
Know what your project needs before you buy a thing.
Free calculators for paint, flooring, concrete, mulch, decks and more. Every formula is checked against manufacturer data, and every price range shows where it came from.
- Works in feet or meters, dollars, pounds or euros
- The math is explained under every calculator
- No sign-up, nothing to install
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Popular calculators
Each one remembers your last numbers, so you can come back to them.
Paint calculatorGallons or liters for any roomFlooring calculatorBoxes of laminate, LVP or hardwoodConcrete calculatorYards or bags for slabs and columnsMulch calculatorCubic yards or bags for your bedsTile calculatorTiles and boxes for any tile sizeFence calculatorPosts, rails, pickets and concreteGravel calculatorTons and cubic yards of stoneDrywall calculatorSheets, screws, mud and tapeSquare footage calculatorArea in sq ft, m² and sq yd
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Good first reads if you are planning a project this season.
Painting
Cost to Paint a Room in 2026: Pro Prices vs Doing It Yourself
What painters charge per room in 2026, what drives the price up, and a calculator that puts a pro range next to your DIY cost.
Flooring & Tile
Flooring Calculator: How Many Boxes of Flooring to Buy
Measure your room, add the right waste factor and get the number of boxes of laminate, vinyl plank or hardwood to buy, plus the material cost.
Outdoor & Yard
Mulch Calculator: How Much Mulch Do You Need?
Enter your garden beds and depth to get cubic yards or bags of mulch, and see whether bags or bulk delivery costs less for your yard.
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PaintingHow much paint and primer, and what a painter should charge.6 guides, 5 calculatorsFlooring & TileBoxes of flooring, tiles, grout and baseboard.6 guides, 5 calculatorsOutdoor & YardMulch, gravel, fences, decks and paver patios.6 guides, 6 calculatorsConcrete & WallsConcrete, post holes, drywall, wallpaper and area.5 guides, 5 calculatorsFor ProsEstimates, hourly rates, markup and quotes.7 guides, 5 calculators
Run a painting, handyman or remodeling business?
Price jobs with the same numbers you would use on site: estimates, hourly rates, markup and a printable quote. And if your business needs a website that brings in calls, we build those too.
Latest guides
Flooring & Tile
Baseboard Calculator: How Much Baseboard Do I Need?
Get the linear feet of baseboard or skirting for one or more rooms, minus doorways, plus how many 8, 12 or 16 ft pieces to buy.
Concrete & Walls
Concrete Calculator: Cubic Yards and Bags for Slabs and Footings
Get cubic yards and 40, 60 or 80 lb bags of concrete for a slab, footing or round column, and compare bagged mix with ready-mix delivery.
For Pros
Contractor Hourly Rate Calculator: What Should You Charge?
Work out the hourly rate you need from the pay you want, your business costs, taxes and real billable hours, so your price covers more than wages.
For Pros
Contractor Website Checklist: 15 Things That Bring In Calls
What a painter, plumber or handyman website actually needs to turn visitors into calls: pages, trust signals, speed, Google setup and mistakes to avoid.
Outdoor & Yard
Cost to Build a Deck in 2026: Wood vs Composite
A new deck costs $30 to $60 per sq ft in 2026. Compare pressure-treated, cedar and composite, and estimate your deck's price with labor and permit.
Painting
Cost to Paint a Room in 2026: Pro Prices vs Doing It Yourself
What painters charge per room in 2026, what drives the price up, and a calculator that puts a pro range next to your DIY cost.
Painting
Cost to Paint a House Exterior in 2026
Exterior painting costs $1.50 to $4 per square foot of home in 2026. See prices by house size, what raises them, and check a quote you got.
Outdoor & Yard
Deck Board Calculator: How Many Deck Boards and Screws
Count deck boards for any deck size, board width and gap, plus how many face screws you need for wood or composite decking.
Concrete & Walls
Drywall Calculator: Sheets, Screws, Mud and Tape
Work out how many sheets of drywall a room needs, plus screws, joint compound and tape, for 4 x 8, 4 x 10 or 4 x 12 sheets or metric boards.