Paint Calculator

Calculate paint quantity, coverage area, and number of cans needed for walls, rooms, and custom areas. Supports multiple coats and waste calculations.

Calculate Paint Requirements

Doors & Windows

Standard door: 2m × 0.9m, Window: 1.5m × 1.2m

0% 30%

Results

Select an area type and enter dimensions to calculate paint requirements

Area Visualization

Select Area Type

What is Paint Calculator

Planning a paint job is easier when you know exactly how much paint you need. Buying too little can delay your project, and buying too much often leads to wasted money and unused cans.

This Paint Calculator is designed to take the guesswork out of the process. You simply enter the size of your room or wall, subtract doors and windows, choose how many coats you plan to apply, and the calculator does the rest.

What makes this tool especially helpful is its clean and visual layout. Diagrams guide you through each measurement, so you always know what to enter. The results are shown clearly, including how many paint cans you'll need based on common sizes.

The calculator works for both small DIY projects and larger professional jobs. It supports different measurement units and automatically adjusts for multiple coats and waste, helping you plan more accurately.

Whether you're refreshing a single wall or repainting an entire room, this calculator saves time and avoids unnecessary purchases. It's built to be simple, practical, and easy to use for everyone.

With clear inputs and reliable results, this Paint Calculator helps you start your painting project with confidence.

How to Use the Paint Calculator

1

Choose Area Type

Select single wall, full room, or enter a custom area size.

2

Enter Dimensions

Input measurements and account for doors and windows to be subtracted.

3

Get Paint Estimate

Receive paint quantity, number of cans needed, and coverage details.

Understanding Paint Calculations

Why Accurate Paint Estimation Matters

Paint calculations help avoid common mistakes like running out mid-project or buying excess paint that goes unused. This calculator accounts for surface area, paint coverage rates, multiple coats, and typical waste factors.

Paint Coverage Rates

Paint Type Coverage Rate Surface Type Recommended Use
Interior Emulsion 10-12 m²/L Walls, ceilings Living rooms, bedrooms
Exterior Masonry 8-10 m²/L Brick, concrete House exteriors
Wood & Metal Primer 12-15 m²/L Wood, metal Preparation coat
Specialty Paint 6-8 m²/L Textured surfaces Decorative finishes
Ceiling Paint 12-14 m²/L Ceilings Flat ceilings

Note: Coverage rates vary based on surface porosity, application method, and paint quality. Always check the manufacturer's specifications for your specific paint product.

Planning for Success

Always buy 10-15% extra paint for touch-ups, color matching, and unexpected surface variations. Consider the surface type - rough textures require more paint than smooth surfaces. For best results, calculate each room separately for more accurate estimates.