Home improvement
Home improvement calculators
All 18 DomusCalc building, renovation and DIY calculators, with waste allowance and what to buy.
12 calculators, all free and with no sign-up.
No calculator matches that word. Try another one.
How much paint do I need?The full calculation, including the deductions and waste most guides skip.How much does a gallon of paint cover?350 to 400 square feet per coat, with a lot of caveats.How to calculate how much tile you needThe grout joint changes the count more than you would expect.How much extra tile should you buy?Between 10 and 15 %, and there are concrete reasons for each.How many bricks per square foot?A standard US brick with a 3/8 in joint gives 6.55 bricks per square foot.How to calculate concreteVolume is length times width times thickness. The rest is detail that matters.How much gravel do I need?Area times depth gives the volume; density turns it into tons.How much sand do I need?Same method as gravel, with a slightly different density.How many rolls of wallpaper do I need?Count usable drops, do not divide square footage.How many sheets of drywall do I need?Net area divided by sheet area, with the faces counted properly.How to measure a room correctlyThree different measurements for three different materials.How much extra material should you buy?Between 5 and 15 % depending on the material and the job.
Home improvement calculators
Paint calculatorTile calculatorFlooring calculatorWallpaper calculatorConcrete calculatorMortar calculatorBrick calculatorBlock calculatorSand calculatorGravel calculatorGrout calculatorDrywall calculatorPlaster calculatorInsulation calculatorDecking calculatorFence calculatorBaseboard calculatorCaulk calculator