Calculateur de Couverture de Peinture Gratuit
Calculez la surface que votre peinture peut couvrir. Déterminez la quantité de peinture nécessaire pour vos murs et plafonds.
Standard interior latex covers ~350 sq ft/gal
Gallons nécessaires
3 gallons
Gallons Needed vs Coverage Rate
Formule
## How to Calculate Paint Coverage ### Formula **Gallons = (Area × Number of Coats) / Coverage Rate** Standard interior latex paint covers approximately 350-400 sq ft per gallon. Factors that reduce coverage include rough or textured surfaces, porous substrates, and dark-to-light color changes.
Exemple Résolu
Painting 400 sq ft of wall area with 2 coats at 350 sq ft/gallon.
- 01Total coverage = 400 × 2 = 800 sq ft
- 02Gallons = 800 / 350 = 2.29 → 3 gallons
Questions Fréquentes
How much wall does a gallon of paint cover?
A gallon of standard interior latex paint covers 350-400 square feet on smooth surfaces. Textured or porous surfaces may reduce coverage to 250-300 sq ft per gallon.
Do I always need two coats?
Two coats is recommended for most situations, especially when changing colors. One coat may suffice when repainting the same or very similar color with high-quality paint.
How do I account for doors and windows?
Subtract approximately 21 sq ft per standard door and 15 sq ft per standard window from your total wall area. Use the Paint Gallons Calculator for automatic deductions.
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