How much paint is required for 1 square meter?

Based on standard Nepali and Indian PWD norms, the first coat of paint covers approximately 11 square meters per liter. Subsequent coats cover about 14.28 square meters per liter because the wall surface is already sealed.

How much wall putty is required per square meter?

For a standard 2mm thickness application over smooth plaster, the coverage rate for wall putty is 2.28 kg per square meter.

How do you calculate the paint area of a room?

To calculate the paint area, use the formula: [2 × Height × (Length + Breadth)] to get the total wall area. Add the ceiling area (Length × Breadth) if you are painting it, and subtract the area of all doors and windows.

← Back to Tool Directory

Paint & Putty Estimator

Accurately estimate paint, primer, and wall putty quantities for your project based on standard Nepali and Indian (PWD) construction norms.

PWD / IS Standard Compliant

Select Estimator Type:

📐 Room Dimensions

Length

Breadth

Height

Include Ceiling Area in Calculation

🚪 Deductions (Doors & Windows)

Doors

Count

Width

Height

Area: 1.89 m²

Windows

Count

Width

Height

Area: 2.88 m²

Paint Coats

Primer Coats

📊 Required Material Quantities

Net Area: 69.23 m²

Required Topcoat Paint

11.14 L

Based on 11 m²/L (1st coat) & 14.28 m²/L (subsequent)

Required Primer

5.61 L

Based on standard 12.34 m²/L coverage per coat

* Calculations are based on standard PWD & IS norms. Actual coverage may vary based on surface porosity, roughness, and application methods.

❓ Frequently Asked Questions (FAQs)

Standard Specifications

Coverage Rates (Nepal & Indian PWD Norms)

Unlike generic calculators, this tool specifically applies the standard engineering coverage constants followed by contractors and civil engineers in Nepal and India (CPWD/PWD specifications). Always account for an additional 5% to 10% wastage when purchasing materials.

Paint Coverage Rates

First Coat: 11.00 m² per Liter
Subsequent Coats: 14.28 m² per Liter
Wall Primer: 12.34 m² per Liter

*The first coat absorbs more paint into the fresh plaster, hence the lower coverage area.

Putty Coverage Rates

Standard Requirement: 2.28 kg per m²
Standard Thickness: 2mm application

*Calculated for application over a standard smooth cement plastered wall.

How to Use the Paint & Putty Estimator

Input Room Dimensions: Enter the exact length, breadth, and height of the room in either meters or feet.
Ceiling Preference: Check the box if you intend to paint the ceiling as well. (The tool will automatically calculate the ceiling area).
Deduct Openings: Enter the number of doors and windows, along with their standard dimensions. The calculator automatically subtracts this empty space from the total wall area.
Select Coats: Choose the number of paint coats (usually 2 for standard finish) and primer coats required.
Switch to Putty: Click the "Putty Calculator" tab to instantly see how many kilograms of wall putty are required to prepare the same room.