Home
Surface texture affects paint coverage.
feet (ft)
feet (ft)
feet (ft)
Standard door: ~20 sq ft each.
Standard window: ~15 sq ft each.
Fireplace, built-ins, etc. (sq ft).
Includes primer if needed.
Check your paint can for exact coverage.
Add extra for spills, touch-ups, and mistakes.
Cost of paint per gallon.
Hourly rate for painter (0 to exclude labor).
Estimated hours to complete the job.
Primer, brushes, rollers, tape, drop cloths, etc.
Number of decimal places in results.
Currency symbol for cost results.
Add ceiling area to the total.

What Is a Paint Cost Estimator?

A paint cost estimator is a tool that calculates the total cost of a painting project, including paint quantity, materials, and labor. It helps homeowners, contractors, and DIY enthusiasts budget accurately for painting projects.

This calculator considers:

  • Paint Quantity: Based on wall and ceiling area, coats, and waste factor.
  • Material Cost: Paint cost plus additional supplies like primer, brushes, rollers, and tape.
  • Labor Cost: Based on estimated hours and hourly rate.

How Does the Paint Cost Estimator Work?

The calculator uses the following formulas:

Wall Area: 2 × (Length + Width) × Height

Ceiling Area: Length × Width (if included)

Paintable Area: (Wall Area + Ceiling Area) − (Doors + Windows + Other)

Gallons Needed: (Paintable Area × Coats × (1 + Waste Factor)) ÷ Coverage

Cans Needed: Ceiling(Gallons Needed)

Total Cost: Paint Cost + Labor Cost + Materials Cost

A waste factor (default 10%) accounts for spills, touch-ups, and mistakes. The calculator also rounds up to the nearest full can of paint.

Why Use This Paint Cost Estimator?

  • Accurate Costing: Includes paint, materials, and labor for a complete estimate.
  • Flexible Inputs: Adjust room dimensions, surface type, coats, and waste factor.
  • Visual Breakdown: A chart shows the cost distribution.
  • Free & Private: No registration, no data storage.
  • Mobile-Friendly: Works on any device.

❓ Paint Cost Estimator FAQ

How much does it cost to paint a room?

The cost varies widely based on room size, paint quality, labor rates, and location. For a standard 12×12 room, expect to pay $300-$800 for a DIY project and $800-$2,500 for professional painting.

How do I estimate the cost of painting a house?

Calculate the total paintable area of all walls and ceilings, subtract doors and windows, then multiply by the number of coats. Factor in paint cost, supplies, and labor hours. This calculator does this for you.

How much paint do I need for a 12×12 room?

A 12×12 room with 8ft ceilings has about 384 sq ft of wall area. With 2 coats and a 10% waste factor, you'll need about 2.4 gallons of paint, which means 3 cans.

How many square feet does a gallon of paint cover?

A gallon of paint typically covers 350-400 square feet on smooth surfaces. Textured surfaces may cover 250-350 sq ft per gallon.

What is the average labor cost for painting?

Professional painters typically charge $25-$60 per hour, or $2-$6 per square foot. Costs vary by region, project complexity, and painter experience.

Should I include primer in my cost estimate?

Yes, primer is essential for new drywall, bare wood, and painting over dark colors. Factor in 1 coat of primer as an additional coat.

How do I calculate paint for textured walls?

Textured walls absorb more paint. Use a coverage rate of 250-300 sq ft per gallon instead of the standard 350-400 sq ft.

What is a waste factor in painting?

The waste factor accounts for spills, mistakes, touch-ups, and paint left in the roller. A standard waste factor is 10-15%.

How much does paint cost per gallon?

Paint prices vary widely: budget paint $15-$30, mid-range $30-$50, premium $50-$80+ per gallon. This calculator lets you enter your specific price.

How do I calculate paint for a room with multiple colors?

Calculate each color section separately. Enter the dimensions for each section and add the results together.

What are the common painting supplies I need?

Essential supplies include: primer, paint brushes, rollers, roller trays, painter's tape, drop cloths, sandpaper, spackle, and cleaning supplies.

How do I estimate labor hours for painting?

A general estimate is 1-2 hours per 100 sq ft for walls, plus preparation and clean-up time. Factors like room complexity, height, and surface condition affect the time.

What is the difference between paint and primer?

Primer prepares the surface for paint, providing adhesion and coverage. Paint provides color and protection. Primer is essential for new surfaces or dramatic color changes.

How do I calculate paint for ceilings?

Measure the length and width of the ceiling to get the area. Add this to your wall area calculation. This calculator includes an option to include the ceiling.

What is the best paint for a room?

Choose based on the room: flat/matte for ceilings, eggshell/satin for living areas, semi-gloss for kitchens and bathrooms, and high-gloss for trim and doors.

How often should I paint my house?

Interior walls: 5-10 years. Exterior: 5-7 years. High-traffic areas may need more frequent painting. Factors like sunlight, humidity, and paint quality affect longevity.

Is it cheaper to paint myself or hire a professional?

DIY painting saves on labor costs but requires time, effort, and skill. Professional painters save time and deliver a higher quality finish. Use this calculator to compare costs for both options.