Painting cost estimator

Paint, primer, prep, labour and travel priced by area, surface and number of coats.

By the LocalServiceHQ editorial team
Updated Oct 29, 2026
Formulas and sources listed below
Prices checked Oct 2026
Your job
Coats
Prep level
Your estimate
Paint needed
—
one gallon covers about 350 sq ft per coat
Typical total
—
paint, primer, prep and labour
Typical range for this job: —
How it adds upTypical
Paint and primer$30–$70 per gallon, plus primer
—
Prep and patchingwashing, sanding, caulking and patching
—
Labourinterior $2.20–$6 per sq ft, exterior $2.80–$8
—
Supplies and traveltape, plastic, brushes and rollers
—
Cost per sq fttotal ÷ paintable area
—
US painting prices for October 2026: interior $2.20–$6 per sq ft including paint and light prep, exterior $2.80–$8. One gallon covers about 350 sq ft per coat, and a third coat adds roughly 15%.
Ask what prep is included: washing, patching, caulking and primer change the price more than the paint brand.
Photo via Pexels

How the math works

Coverage
Paint
area × coats ÷ 350 = gallons
One gallon covers about 350 sq ft per coat.
Interior rate
Cost
$2.20 to $6 per sq ft
Includes walls and ceilings with two coats and light prep.
Exterior rate
Cost
$2.80 to $8 per sq ft
Washing, scraping and caulking push exterior work higher.
Third coat
Cost
about +15%
Colour changes and dark colours usually need it.

Common starting points

Common US painting jobs with two coats.

Tap a preset in the calculator above to load a typical job, then adjust the numbers to match your site.
Starting points: 1,000 sq ft interior · 2,200 sq ft interior · 2,200 sq ft, 3 coats · 2,200 sq ft exterior · 3,500 sq ft exterior

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How to use the painting cost estimator

Measure the area, choose interior or exterior and count coats, then compare bids on the same prep scope.

1
Measure the area
Wall length times height, ceilings included if they are being painted.
2
Decide the coats
Two coats are standard; a third is often needed for colour changes.
3
Agree on prep
Washing, patching, caulking and priming should be line items in the bid.
4
Buy paint and primer together
Matching primer and paint from the same system avoids adhesion problems.

Mistakes that cost homeowners money

!
Paying for premium paint but no prep, which fails in a season.
!
Skipping primer over a dark colour or bare wood.
!
Not covering furniture and floors, which turns a saving into a repair bill.
!
Choosing an exterior paint month outside the manufacturer's temperature range.

Painting cost FAQ

How much does it cost to paint a house interior?

Interior painting runs about $2.20 to $6 per sq ft of wall and ceiling area, so a 2,200 sq ft area costs roughly $7,900 for two coats including light prep.

Divide the area by 350 sq ft per gallon and multiply by the number of coats. A 2,200 sq ft area with two coats needs about 13 gallons.

Materials are 15 to 25 percent of a professional exterior job. The savings look big until prep, height and warranty are counted.

A typical interior takes two to four days including prep and dry time. Whole-house jobs take a week or more.

Prime over bare wood, patched drywall, dark colours and stains. On a clean wall painted a similar colour, a paint-and-primer product can be enough.

Every five to ten years depending on the material and climate. Wood siding needs it more often than vinyl or fiber cement.

Using the calculator defaults, 1,000 sq ft interior gives Paint needed: 6 and Typical total: $4,477, with a typical range $2,483 to $7,140. Change the waste allowance, material or thickness to match your site.

Using the calculator defaults, 3,500 sq ft exterior gives Paint needed: 20 and Typical total: $19,590, with a typical range $10,518 to $31,678. Change the waste allowance, material or thickness to match your site.