Paint Calculator

Professional Paint Calculator - Accurate Paint Quantity Estimation

Our professional paint calculator helps you determine exactly how much paint you need for any interior or exterior painting project. Whether you're planning to refresh a single room or tackle your entire home, accurate paint calculations save you time, money, and multiple trips to the store.

How to Use the Paint Calculator

1. Measure Your Room: Enter the room length, width, and height in feet
2. Count Openings: Include the number of doors and windows to subtract from total area
3. Choose Options: Select whether you're painting the ceiling and how many coats you need
4. Set Coverage Rate: Use 350 sq ft per gallon for most quality paints, or check your paint can label
5. Add Waste Factor: Include extra paint for touch-ups and application waste

Paint Coverage Guidelines

• Premium Paints: 400-450 sq ft per gallon
• Standard Quality: 350-400 sq ft per gallon
• Budget Paints: 250-350 sq ft per gallon
• Primer: 200-300 sq ft per gallon

Professional Tips for Paint Calculation

Standard Door Size: 20 square feet
Standard Window Size: 15 square feet
Waste Factor: Always add 10-15% extra for touch-ups and waste

Related Paint Products

Once you know how much paint you need, explore our extensive selection of premium paints and coatings. We carry:

• Interior Paint - High-quality interior paints in all finishes
• Exterior Paint - Weather-resistant exterior coatings
• SHERWIN-WILLIAMS Paint - America's most trusted paint brand
• Paint Tools & Supplies - Professional brushes, rollers, and accessories

Additional Painting Tools

Complete your painting project planning with these helpful tools:

• Area Calculator - Calculate room areas for any shape
• Trim Calculator - Estimate trim paint quantities
• Ceiling Calculator - Specialized ceiling paint calculations
• Material Cost Tracker - Track your painting project costs

Paint Finish Selection Guide

Flat/Matte: Best for ceilings and low-traffic areas
Eggshell: Ideal for living rooms and bedrooms
Satin: Great for kitchens, bathrooms, and high-traffic areas
Semi-Gloss: Perfect for trim, doors, and moisture-prone areas
Gloss: Excellent for doors, trim, and areas requiring frequent cleaning