Sandpaper Calculator
Calculate how many sheets of sandpaper and related supplies you need for sanding walls, trim, or furniture before painting.
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How It Works
Sand between coats for the smoothest finish. For drywall patches, use 120-150 grit. For trim and wood, start at 100 and work up to 220. A power sander covers about 25 sq ft per sheet; hand sanding about 10. Always use a tack cloth to remove dust before painting. Wear a dust mask — sanding dust is harmful to breathe.