Interior Painting Cost Calculator
Get an instant free estimate for professional interior painting, including walls, ceilings, and trim.
How is Interior Painting Cost Calculated?
Painting costs are driven by Surface Area and Prep Time. While floor square footage is a common estimator, the actual wall height, number of doors/windows (trim work), and the amount of furniture to move affect the final price significantly.
Calculate Your Estimate
Project Location
Choose which state the project is located.
Project Details
Enter the floor area and room count.
Additional Surfaces & Services:
Key Factors Influencing Painting Rates
Wall Height
Vaulted ceilings (12ft+) can increase labor costs by 30-50% due to the need for scaffolding and slower cutting-in speeds.
Paint Quality
Premium paints (e.g., Benjamin Moore Aura, Sherwin Williams Emerald) cost $70-$90 per gallon, whereas contractor-grade paints cost $30-$40. Better paint covers in fewer coats and lasts longer.
Average Cost by Home Size
| Home Size | Basic (Walls Only) | Full (Walls, Trim, Ceilings) |
|---|---|---|
| 1 Room (12x12) | $350 – $550 | $600 – $900 |
| 1,000 sq ft Condo | $2,500 – $3,500 | $4,000 – $6,000 |
| 2,000 sq ft Home | $5,000 – $7,000 | $8,000 – $12,000 |
| 3,000 sq ft Home | $7,500 – $10,000 | $12,000 – $18,000 |
How to Estimate Interior Painting Cost Manually
Most painters quote based on the floor area of the home (if painting the whole house) or the wall surface area (for individual rooms). The condition of the walls and amount of prep work are major factors.
Step 1: Determine Paintable Area
(Length + Width) x 2 x Height gives you gross wall area. Subtract 20 sq ft per door and window.
Step 2: Factor in Ceiling Height
Standard 8ft ceilings are the baseline. 10-12ft ceilings or vaulted foyers require ladders and scaffolding, increasing labor cost by 20% - 40%.
Step 3: Add Trim and Ceilings
Painting walls is the base price. Adding Baseboards, Door Frames, and Crown Molding typically doubles the time required. Ceilings add about 30% to the total cost.
Step 4: Use the Formula
(Floor_SqFt × $3.50) + (Trim_Linear_Ft × $2) + Paint_Materials = Total
Example: For a 12' x 12' Bedroom (144 sq ft floor):
(144 sq ft × $3.50) + (48 ft trim × $2) + $75 (Materials) = $675.00 Total
Frequently Asked Questions
How many coats of paint do I need?
Two coats are standard for a professional finish and true color depth. If you are painting the same color over clean walls, one coat might suffice, but it's risky.
Is paint included in the estimate?
Most professional quotes include the cost of paint and materials. Our calculator assumes materials are included (about 15-20% of the total cost).
What is the difference between Eggshell and Satin?
Flat/Matte has no shine and hides imperfections. Eggshell has a slight luster and is wipeable (good for living rooms). Satin handles moisture better and is ideal for kitchens and baths.
Does the room need to be empty?
Painters prefer empty rooms. If furniture remains, they must move it to the center and cover it, which may incur a 'furniture manipulation' fee.
Do I need primer?
Primer is needed if you are painting over a dark color with a light one, if there are repairs/patches, or if the walls are new drywall (PVA primer). Self-priming paints work for standard repaints.
How long does it take to paint a room?
A professional typically takes 4-6 hours to prep, cut-in, and roll two coats on a standard 12x12 bedroom. A whole house (2000 sq ft) takes a crew of 2-3 painters about 3-5 days.
Are walls and trim the same paint?
No. Walls are usually Eggshell or Flat to hide bumps. Trim (baseboards/doors) is usually Semi-Gloss or Satin for durability and resistance to scuffs.
What about lead paint?
Homes built before 1978 may have lead paint. If surfaces are peeling or need sanding, EPA lead-safe certified professionals are required, which increases cost significantly.
Can you paint over wallpaper?
Technically yes, with an oil-based primer, but it is not recommended. The texture often shows through, and seams can bubble. Removing wallpaper is best but labor-intensive.
Why are high ceilings so much more expensive?
High ceilings require taller ladders or scaffolding, which slows down the work. There is also a higher risk factor and more physical exertion involved in cutting in the top corners.