Paint Calculator
Calculate paint coverage, gallons needed, and project costs
Room Details
Enter room dimensions and painting specifications
Painting Guide
Paint Coverage Calculator
Accurately estimate paint needed to avoid running out mid-project or buying excess
Measure wall dimensions, subtract doors/windows. One gallon covers ~400 sq ft
Surface Area Calculation
Calculate exact paintable area by accounting for doors, windows, and architectural features
Measure each wall, subtract 20 sq ft per door and 15 sq ft per standard window
Primer Requirements
Ensure proper paint adhesion and color coverage, especially over dark or stained surfaces
Use primer on new drywall, color changes, or stained surfaces. Same coverage as paint
Paint Calculator Information
Complete guide to paint calculations and project planning
| What | Why | When/How |
|---|---|---|
| Paint Coverage Calculator | Accurately estimate paint needed to avoid running out mid-project or buying excess | Measure wall dimensions, subtract doors/windows. One gallon covers ~400 sq ft |
| Surface Area Calculation | Calculate exact paintable area by accounting for doors, windows, and architectural features | Measure each wall, subtract 20 sq ft per door and 15 sq ft per standard window |
| Primer Requirements | Ensure proper paint adhesion and color coverage, especially over dark or stained surfaces | Use primer on new drywall, color changes, or stained surfaces. Same coverage as paint |
| Multiple Coat Planning | Plan for proper coverage and color depth with appropriate number of paint coats | Two coats standard for most projects. Dark to light colors may need 3 coats |
| Paint Type Selection | Choose appropriate paint type for durability, finish, and application requirements | Latex for most interiors, oil for trim/doors, specialty for bathrooms/kitchens |
| Cost Estimation | Budget accurately for paint, primer, and supplies based on quality and coverage needs | Quality paint costs $45-65/gallon. Include brushes, rollers, drop cloths in budget |
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