Paint Calculator 🎨
Quickly estimate how much paint you need for any room, accounting for doors, windows, and multiple coats. Get results in gallons or liters with smart coverage estimates.
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About Paint Calculator 🎨
How to Use the Paint Calculator
Enter the length, width, and height of your room in feet or meters. Specify the number of doors and windows to subtract their area from the total wall surface. Select how many coats you plan to apply (typically 2 for best coverage). The calculator uses industry-standard coverage rates to estimate the gallons or liters of paint you'll need.
Professional Painting Tips
- Always buy 10-15% extra paint to account for touch-ups, uneven surfaces, and future repairs.
- Primer coats may require different coverage rates than finish coats—check manufacturer specifications.
- Textured walls, porous surfaces, and dark-to-light color changes may need additional paint.
- Keep paint from the same batch to ensure consistent color matching across all walls.
Paint Coverage Reference
| Paint Type | Coverage (per gallon) | Coverage (per liter) | Best For |
|---|---|---|---|
| Primer | 300-350 sq ft | 8-10 m² | New drywall, stain blocking, dark-to-light changes |
| Interior Paint (Flat/Matte) | 350-400 sq ft | 10-12 m² | Ceilings, low-traffic areas, bedrooms |
| Interior Paint (Satin/Eggshell) | 350-400 sq ft | 10-12 m² | Living rooms, dining rooms, hallways |
| Interior Paint (Semi-gloss/Gloss) | 300-350 sq ft | 8-10 m² | Kitchens, bathrooms, trim, doors |
Reference this content, page, or tool as:
"Paint Calculator 🎨" at https://MiniWebtool.com/paint-calculator/ from MiniWebtool, https://MiniWebtool.com/
by miniwebtool team. Updated: Oct 16, 2025
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