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Paint Cost Estimator

Calculator Engine
Tip: Standard paint coverage is about 100-120 sq. ft per liter for a single coat. Primer typically covers less area.

Result Summary

Estimated Total Cost
NPR 45,000
Total Paint Required
100 Liters
Effective Area (All Coats)
1,000 sq.ft
Efficiency Factor
10 sq.ft/L

Paint Coverage Science: How Volume, Surface & Coats Interact

Accurate paint estimation is the difference between a seamless renovation and a frustrating mid-project color mismatch. Paint batches vary slightly between production runs, so running out mid-wall is a critical problem. Our paint calculator uses the standard volumetric coverage formula (Area ÷ Coverage Rate = Liters) with ceiling rounding to ensure you always purchase enough paint without excessive waste.

The key variable is coverage rate, the area a given volume of paint covers at adequate opacity. This varies by paint quality (premium paints cover 10–15% more), wall texture, and application method. We recommend using the rate printed on your specific paint can for the most accurate estimate.

Factors Affecting Paint Coverage in Nepal's Climate

  • Surface Porosity: Raw concrete and exposed brick (common in Nepal construction) are highly porous and may require a primer coat plus a 20–30% increase in paint volume compared to smooth, pre-painted drywall.
  • Monsoon Humidity: High humidity during Nepal's monsoon season (June–September) extends drying time and can require thinner coats, potentially increasing the number of passes needed for full coverage.
  • Color Transition: Painting a light color over a dark wall (or vice versa) typically requires 3 coats instead of the standard 2 to achieve a uniform finish without bleed-through.

How to use

  • Measure the height and width of your walls to find the total square footage (Area = Height × Width). Subtract the area of doors and windows.
  • Enter the 'Total Wall Area' into the calculator.
  • Select the number of coats you plan to apply. Darker colors or new walls typically require 2-3 coats.
  • Input the cost per liter of the paint you wish to buy.
  • Adjust the coverage value if your paint brand specifies a different coverage rate (usually found on the paint can).

Paint Calculation Formula

The formula to calculate the number of paint liters needed is based on the total surface area and the paint's coverage rating.

Total Area (All Coats) = Wall Area × Number of Coats Liters Needed = Ceiling(Total Area / Coverage per Liter) Total Cost = Liters Needed × Price per Liter

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Frequently Asked Questions

On average, 1 liter of standard acrylic emulsion paint covers about 100 to 120 square feet per coat. Premium paints may cover 130+ sq. ft. Rough or porous surfaces (like raw concrete or textured stucco) reduce coverage to 80–90 sq. ft. per liter. Always refer to the coverage rate on the paint can for precision.
Yes, for maximum accuracy. Measure each door (~21 sq. ft. average) and window (~15 sq. ft. average) and subtract their combined area from the total wall surface before entering the value into the calculator.
Standard interior painting: 2 coats. New/unprimed walls or drastic color changes: 3 coats. Exterior painting (sun and rain exposure): 2-3 coats with a primer. Using a primer as your first coat is recommended for all new construction.
We use ceiling rounding because you cannot purchase a fraction of a liter. If the calculation shows 11.2 liters, you need to buy 12 liters. Running short of paint mid-project risks color-match issues between different batches, so it's always better to buy slightly more.
Primer is a preparatory coating applied before the main paint to improve adhesion and reduce porosity. Primer typically has a lower coverage rate than finish paint (80–90 sq. ft. per liter). Run a separate calculation for the primer coat by setting 'Number of Coats' to 1 and adjusting the coverage rate accordingly.
Most mid-range acrylic interior paints sold in Nepal (including Berger WeatherCoat, Asian Apcolite, and Nippon Vinilex) specify approximately 100–130 sq. ft. per liter at standard dilution. Check the back of the specific product can as coverage varies by product line (matt vs. silk vs. gloss).

Renovation Guide: Painting Costs in Nepal

Transforming your home starts with a realistic budget. In the Nepalese market, where brands like Asian Paints, Berger, and Kansai Nerolac dominate, understanding coverage ratios is the key to cost-effective renovation.

Our Painting Budget Laboratory accounts for both interior and exterior emulsions. By factoring in the number of coats, primer requirements, and local labor rates, we provide a comprehensive financial breakdown that helps you manage your home improvement project without surprises.

Painting & Material FAQ

How much area does 1 liter of paint cover in Nepal?

Standard interior emulsion paint covers approximately 100 to 120 square feet per liter for a single coat. For the recommended two-coat finish, 1 liter covers about 50-60 square feet.

How many coats of paint are necessary for new walls?

For newly plastered walls, you should apply one coat of primer followed by at least two coats of emulsion paint to ensure proper color depth and durability.

Do I need to calculate the ceiling area separately?

Yes. The ceiling area is typically equal to the floor area. Forgetting to include the ceiling can result in under-ordering paint by 25% or more.

How do I account for doors and windows in the paint budget?

A standard door is roughly 21 sq. ft. and a window is 12-16 sq. ft. Subtracting these from your total wall area prevents over-spending on expensive paint.

What is the average labor cost for painting in Nepal?

Labor costs typically range from Rs. 15 to Rs. 30 per square foot for interior work, depending on whether the scope includes wall putty (pari) and sanding.

How it works

Total = (Total Area / Coverage) × Price per Liter

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