Caulk Calculator
Estimate quantities and get instant results with unit conversion and waste adjustments.
Surface Calculators
Coverage-based calculators for surface materials with packaging conversions and waste.
These surface calculators figure coverage for finish materials: paint, flooring, tile, siding, drywall, stain, and wallpaper. Enter your area and the product's coverage rate, and each tool returns gallons, boxes, sheets, or rolls with adjustable waste for cuts, breakage, and pattern repeat - several also deduct doors and windows for a tighter estimate.
Drywall Calculator
Estimate drywall sheets needed by wall or ceiling area with waste.
Flooring Calculator
Estimate flooring boxes needed by area and coverage per box with waste.
Grout Calculator
Estimate sanded, unsanded, or epoxy grout from tile size and joint width, in pounds, bags, or units.
Paint Calculator
Estimate paint gallons by room size, coats, and coverage, with ceiling and trim.
Siding Calculator
Estimate siding coverage by wall area and packaging with waste.
Stain Calculator
Estimate wood stain quantity by surface area, coats, and coverage rate.
Tile Calculator
Estimate tile quantity by area and tile size. Outputs tiles or boxes with waste.
Wallpaper Calculator
Estimate quantities and get instant results with unit conversion and waste adjustments.
Frequently Asked Questions
What surface calculators are here?
Paint, flooring, tile, grout, siding, drywall, stain, and wallpaper.
Do these include a waste allowance?
Yes. Each has an adjustable waste percentage for cuts, breakage, and - for wallpaper - pattern repeat.
How do I find my material's coverage rate?
Check the product label or spec sheet (square feet per gallon, per box, or per roll) and enter it; the calculator uses your exact figure.
Do they subtract doors and windows?
Several do - siding and brick deduct openings - while others estimate gross area. Each calculator notes its assumptions on the page.