Calculadora de Pintura — ft, sq ft, gallons & cost
Como usar esta calculadora
Choose a surface mode — room muros, ceiling, single wall, or custom area. Ingrese las dimensiones en pies y pulgadas, select paint type and numero de capas. Doors y ventanass are automatically deducted. Los resultados se actualizan al instante.
Paint types — Flat/Matte (400 ft²/gal), Eggshell (350), Satin (350), Semi-Gloss (350), Gloss (300).
Primer — 1 coat at 300 ft²/gal for new drywall, dark-to-light color changes, or stain blocking.
Cost — price per gallon of paint and primer, plus optional flat-rate for supplies (rollers, brushes, tape, drop cloths).
Calculos guardados
| Hora | Mode | Area ft² | Paint gal | Primer gal | Capas | Total $ |
|---|
How to Calculate Paint for a Room
Esta calculadora de pintura estimates the gallons of paint and primer needed for muros, ceilings, or any custom surface area. Ingrese las dimensiones de la habitacion en pies y pulgadas, choose your paint finish (flat, eggshell, satin, semi-gloss, or gloss), select the numero de capas, and optionally add primer. Doors (21 ft² each) y ventanass (12 ft² each) are automatically subtracted.
Formulas Used
Paintable area = wall perimeter × height − doors − windows.
Paint gallons = ceil(paintable area × coats × (1 + waste%) ÷ cobertura por gallon).
Primer gallons = ceil(paintable area × (1 + waste%) ÷ 300).
Paint Coverage by Finish
Flat/Matte: 400 ft²/gal — best for ceilings and low-traffic areas. Eggshell: 350 ft²/gal — most popular for living rooms and bedrooms. Satin: 350 ft²/gal — kitchens, bathrooms, hallways. Semi-Gloss: 350 ft²/gal — trim, doors, cabinets. Gloss: 300 ft²/gal — high-moisture areas and accent surfaces.
Preguntas frecuentes
Do I need primer? Yes, if painting new drywall, going from dark to light colors, or covering stains. One coat of primer at 300 ft²/gal is sufficient for most situations.
