How to estimate a paint job

A clear, repeatable way to estimate painting jobs so you quote fast and protect your margin — the same method WEDO automates.

Measure the space

Estimating starts with surface area, not guesswork. Measure wall length × height for interiors, and wall area minus openings for exteriors. Note ceilings, trim, doors and windows separately — they paint at different speeds.

Count coats and prep

Decide primer plus one or two finish coats based on color change and surface condition. Add prep time for patching, sanding, caulking and masking — on repaints, prep is often the biggest labor line.

Use production rates for labor

Painters price labor with production rates — how many square feet a painter covers per hour for each task (rolling walls, cutting in, brushing trim). Multiply area by your rate, then by your labor cost, to get labor hours and dollars.

Add materials, overhead and margin

Add paint and sundries (tape, plastic, caulk, sandpaper), then overhead (truck, insurance, software) and a profit margin. A common mistake is pricing labor and paint but forgetting overhead and margin — that's how busy painters stay broke.

Or let AI do it in minutes

WEDO turns a photo, video or blueprint into a priced estimate automatically — surfaces, coats and a ready proposal — so you can quote on-site and win the job before you leave. Try the free calculator to see a sample estimate now.

FAQ

How do painters calculate an estimate?

By measuring surface area, choosing coats and prep, applying production rates for labor, then adding materials, overhead and a profit margin.

Is there a free painting estimate calculator?

Yes — WEDO offers a free painting estimate calculator with no signup; snap a photo and get a priced estimate.

How much should I charge to paint a room?

It varies by market and surface condition, but pricing by square foot of surface plus prep is the reliable method. A calculator or app keeps it consistent across quotes.