Estimate house painting costs for a single room, 12x12 room, or whole-home interior. Enter dimensions, doors, windows, coats, and coverage to calculate gallons, supplies, and DIY vs professional painting ranges.
Planning range
Search intent match
Use this paint calculator for room painting, whole-house interior painting, and quick DIY vs professional paint cost planning.
Enter room dimensions, doors, windows, coats, ceiling height, and paint coverage to estimate gallons, supplies, and a planning range before pricing labor.
Use the calculator for one room, a 12x12 room, or a whole-home interior estimate before asking painters for quotes.
Start with the calculator result, then compare DIY supplies against local painter quotes for the same square footage, coats, ceilings, and trim.
For a full-home benchmark, compare interior walls, ceilings, trim, exterior paint, DIY supplies, and professional labor ranges.
See 2,000 sq ft house painting costFor a single-room benchmark, compare DIY paint and supplies with professional painter pricing for walls, ceilings, and trim.
See 12x12 room painting costFor a deeper savings comparison, review the DIY vs professional painting guide.
Compare DIY vs pro paintingEnter your project details to calculate a planning range.
Budget planning
Use this as a quote review checklist after you calculate your range.
Paint quality, primer, tape, rollers, and trays drive the material range.
Prep work, ceilings, trim, and multi-coat jobs increase pro pricing.
Add extra for repairs, stains, texture, or color changes.
Cost drivers
The same project can price very differently depending on scope, material grade, local labor, access, and timing. Use these factors to understand why two quotes may not match.
| Factor | Lower-cost version | Higher-cost version |
|---|---|---|
| Paintable wall area | Standard paintable wall area or simple scope | Premium paintable wall area, difficult access, or complex project requirements |
| Number of coats | Standard number of coats or simple scope | Premium number of coats, difficult access, or complex project requirements |
| Primer and prep | Standard primer and prep or simple scope | Premium primer and prep, difficult access, or complex project requirements |
| Ceilings and trim | Standard ceilings and trim or simple scope | Premium ceilings and trim, difficult access, or complex project requirements |
Budget control
These steps help reduce bid spread, avoid surprise charges, and keep the final invoice close to your calculator result.
Do simple prep work yourself if the contractor agrees it will reduce labor.
Use standard material sizes and avoid complex patterns where possible.
Buy enough extra material from the same batch or dye lot.
Use the Paint Cost Calculator result to avoid overbuying or underbuying materials.
Common project sizes
Write down exact measurements and project scope.
Save your calculator result and share the same scope with each contractor.
Ask whether permits, disposal, delivery, and prep work are included.
Compare at least 3 quotes using the same material grade and timeline.
Wall Area = 2 x (Length + Width) x Wall Height Net Wall Area = Wall Area - (Doors x 20 sq ft) - (Windows x 15 sq ft) Paint Needed (gallons) = Net Wall Area x Number of Coats / Coverage per Gallon
You would need approximately 1.73 gallons of paint. We recommend buying 2 gallons.
In the US, a gallon of interior latex paint costs $25-$60. Professional painting labor averages $2-$6 per square foot. DIY painting can save $500-$2,000+ per room.
| Factor | Impact on Cost |
|---|---|
| Paintable wall area | Affects total estimate significantly |
| Number of coats | Affects total estimate significantly |
| Primer and prep | Affects total estimate significantly |
| Ceilings and trim | Affects total estimate significantly |
$150-$400 for materials
$500-$950 per room installed
Hire a pro for ceilings above 12 ft, popcorn ceiling removal, lead paint remediation, or when you need a flawless finish on accent walls.
Costs vary significantly by U.S. region. High-cost areas like California, New York, Massachusetts, and Washington D.C. metro can be 20-40% above national averages. Midwest and Southern states generally have lower labor rates. Rural areas may have fewer contractor options but lower overhead costs.
Popular state cost guides
Use your calculator result as a baseline, then check high-demand state pages for local labor, permit, climate, access, and material differences.
$300 - $1,200 per room or $6,000 - $16,000+ for many full-home interiors
California interior painting costs vary with labor demand, room count, ceiling height, drywall repair, trim scope, access, color changes, and whether the home is occupied.
$225 - $950 per room or $4,800 - $12,000+ for many full-home interiors
Texas interior painting costs depend on home size, wall height, drywall repair, trim and ceiling scope, paint quality, occupied-home access, and local labor demand.
$250 - $1,000 per room or $5,000 - $13,500+ for many full-home interiors
Florida interior painting costs vary with humidity, wall repair, ceiling height, trim scope, paint quality, condo access, occupied-home scheduling, and local labor demand.
$150 - $950 per room or $4,000 - $9,500+ for many full-home interiors
Nevada interior painting costs depend on room size, wall height, paint quality, drywall repair, texture matching, and labor demand in fast-growing metro areas.
$175 - $900 per room or $4,200 - $9,800+ for many full-home interiors
Utah painting costs vary with fast-growing metro demand, large open layouts, high ceilings, drywall texture, stairwells, and the amount of prep needed before finish coats.
Cost ranges for the Paint Cost Calculator are based on publicly available U.S. market research, supplier price catalogs, contractor labor rate surveys, and industry-standard estimation formulas. We do not claim specific named sources. Our methodology is transparent: we aggregate publicly available data and apply industry formulas to produce reasonable estimates for preliminary project planning. Estimates are reviewed and updated quarterly. Last major review: July 2026.
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Editorial Note: Written and reviewed by the Paint Cost Calculator editorial team. Updated: July 2026. All figures are estimates only. For exact pricing, consult local professionals and obtain multiple quotes.
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Last updated: July 2026
This Paint Cost Calculator provides estimates only. Actual costs, quantities, and project requirements may vary based on location, material availability, labor rates, project complexity, and market conditions. This tool does not provide professional construction, financial, legal, or engineering advice. Always consult qualified professionals for your specific project.