Curbsend
Free tool for painting contractors

Interior Painting Estimate Calculator

Enter the number of rooms, their average size and what's getting painted. The calculator works out wall and ceiling area after doors and windows, how many gallons you need for the coats you're doing, and the hours for prep, walls, ceilings, trim and doors.

Job details

Your pricing
Estimate
before sales tax
$2,936.10
Wall area: 1,108 sq ftCeiling area: 504 sq ftPaint: 12 gal
Labor
Prep: move furniture, patch, sand, mask (medium prep)4 hr × $65.00$260.00
Walls, 2 coats (1,108 sq ft)14 hr × $65.00$910.00
Ceilings, 2 coats (504 sq ft)9.5 hr × $65.00$617.50
Baseboards, casings and window trim4 hr × $65.00$260.00
Doors, both sides (4)3 hr × $65.00$195.00
Materials
Wall paint7 gal × $54.00$378.00
Ceiling paint3 gal × $42.00$126.00
Trim and door paint, semi-gloss2 gal × $62.40$124.80
Tape, plastic, patch and caulk3 room × $21.60$64.80
Total before tax$2,936.10

Labor at $65/hr, 20% markup on materials, equipment and disposal. Material prices and crew speeds are starting values; set your own in the app.

Send this as a quote from the driveway

In Curbsend, this calculator runs with your own prices and speeds, turns the result into an itemized quote with good, better and best options, and texts it to the customer to approve and pay a deposit from their phone.

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Pricing tips for interior painting

  • Prep is where interior jobs lose money. Bump the wall condition up a level when you see patched or glossy walls.
  • Price ceilings and trim as separate lines so the customer sees what dropping them saves, rather than asking for a discount.
  • Two coats is the honest default for color changes. Quote one coat only for same-color refreshes.

Starting values this calculator uses

Material costs and crew speeds vary by market and by crew. These are the defaults; in the app you replace them with your own, and every estimate uses your numbers.

  • Wall paint$45/gal
  • Ceiling paint$35/gal
  • Trim paint$52/gal
  • Coverage350 sq ft/gal
  • Wall painting speed, per coat160 sq ft/hr
  • Ceiling painting speed, per coat110 sq ft/hr
  • Hours per door0.75 hr
  • Trim hours per room1.25 hr
  • Prep hours per room (light)0.75 hr
  • Tape, plastic, patch per room$18/room

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