Paint Calculators

Cabinet paint behaves differently from wall paint. Doors and drawer fronts are small, hard-wearing surfaces, often painted on both sides, and they usually need a separate primer line. That is why the cabinet calculator measures each front, asks whether the visible box is included, and rounds in quarts instead of pushing every project into a full gallon.

Wallpaper uses a different ordering rule. Rolls are cut into full-height strips, and pattern repeat can turn a reasonable area estimate into an extra roll. The wallpaper calculator counts strips and roll yields instead of square footage, which keeps partial strips and matching waste visible before you buy.

For cabinets, the answer moves with door and drawer dimensions, fronts-only versus both-sides coverage, primer coverage, coat count, and whether you spray or roll. Spraying uses more paint because overspray and equipment loss are real; rolling or brushing usually wastes less but takes longer.

For wallpaper, the decisive inputs are wall perimeter, opening width, roll size, wall height, and pattern repeat. A large repeat can raise the strip length enough to remove a full strip from every roll. Doors and windows help only when their full width is excluded from the perimeter.

Start with the cabinet calculator when you are painting doors, drawer fronts, face frames, side panels, or an island back. Enter measured dimensions, use the paint and primer TDS for coverage, and add prices only if you want a material estimate from your own numbers.

Start with the wallpaper calculator when you are covering walls. If a room includes both cabinets and wallpaper, measure them separately: paint quantity belongs to the cabinet plan, while wallpaper rolls belong to the wall plan. That split avoids the classic mistake of buying wall paint by the gallon for a cabinet job that only needs a few quarts.