{"id":"exterior-paint-cost-calculator","name":"Exterior Paint Cost Calculator","shortName":"Exterior Paint Cost","canonicalUrl":"https://calcurhome.com/calculators/exterior-paint-cost-calculator","catalogUrl":"https://calcurhome.com/api/calculators","category":{"id":"paint-drywall","name":"Paint, drywall & insulation","url":"https://calcurhome.com/calculators/category/paint-drywall"},"language":"en-US","audience":"US homeowners, DIYers and home-project planners","primaryKeyword":"exterior paint cost calculator","secondaryKeywords":["house exterior painting cost estimator","exterior paint gallons calculator","exterior painting labor cost","cost to paint house exterior","exterior paint budget calculator"],"description":"Calculate exterior paint gallons and a planning budget from paintable area, coats, coverage, waste, and your local material and labor prices.","directAnswer":"Multiply paintable exterior area by coat count and waste, divide by the product’s stated coverage, and round gallons up. Material cost uses whole gallons; preparation and application rates use measured surface area. Enter local prices and define whether washing, scraping, repairs, primer, masking, access equipment, trim, and cleanup are included.","inputs":[{"key":"paintableArea","label":"Paintable exterior area","unit":"sq ft","defaultValue":2400,"min":1,"max":1000000,"step":1},{"key":"coats","label":"Finish coats","unit":"coats","defaultValue":2,"min":1,"max":6,"step":1},{"key":"coverage","label":"Coverage per gallon per coat","unit":"sq ft","defaultValue":350,"min":1,"max":1000,"step":1,"help":"Use the selected coating’s label and adjust for rough or porous surfaces."},{"key":"waste","label":"Application allowance","unit":"%","defaultValue":10,"min":0,"max":30,"step":1},{"key":"paintPrice","label":"Local paint price","unit":"$/gal","defaultValue":0,"min":0,"max":1000,"step":0.01},{"key":"prepRate","label":"Preparation quote","unit":"$/sq ft","defaultValue":0,"min":0,"max":100,"step":0.01},{"key":"laborRate","label":"Application labor quote","unit":"$/sq ft","defaultValue":0,"min":0,"max":100,"step":0.01},{"key":"fixedCosts","label":"Primer, supplies, access, and fixed costs","unit":"$","defaultValue":0,"min":0,"max":1000000,"step":1},{"key":"contingency","label":"Contingency","unit":"%","defaultValue":10,"min":0,"max":50,"step":1}],"formula":{"title":"Exterior paint quantity and budget","expression":"Gallons = ceiling(area × coats × allowance ÷ coverage); total = (gallons × local paint price + area × prep rate + area × labor rate + fixed costs) × contingency factor","explanation":"Finish material follows coat-area coverage and rounds to whole gallons. Preparation and application quotes stay tied to measured surface area, while project-level supplies and access costs are added once before the entered contingency."},"measurementGuide":["Measure each wall rectangle and gable, subtract only large unpainted openings, and calculate trim or accent surfaces separately.","Inspect siding, stucco, masonry, fascia, soffits, eaves, doors, and trim to define preparation and repair scope before pricing.","Use coverage from the selected product and substrate conditions; rough, porous, sprayed, or heavily repaired surfaces may cover differently.","Separate high-access elevations, detached structures, railings, and multiple colors when contractors or equipment price them differently."],"buyingTips":["Compare proposals by washing, scraping, sanding, repair, caulking, primer, coat count, application method, access, and cleanup.","Use compatible primers and coatings approved for the substrate, previous finish, climate exposure, and application temperature.","Keep product name, sheen, color formula, batch information, and leftover labeled paint for future maintenance.","For pre-1978 surfaces, determine applicable lead-safe requirements before scraping, sanding, cutting, or other paint disturbance."],"workedExample":{"title":"Two-coat exterior repaint","scenario":"A 2,400-square-foot exterior gets two coats at 350 square feet per gallon with 10% allowance, $55 paint, $0.80 prep, $1.50 labor, $250 fixed costs, and 10% contingency.","result":"Sixteen gallons are required; the entered subtotal is $6,650 and the planning total is $7,315."},"commonQuestions":[{"question":"How do I calculate exterior paintable area?","answer":"Break elevations into rectangles and triangles, add their areas, and subtract only substantial openings that will not consume paint around their edges. Measure fascia, soffits, doors, trim, railings, and accent materials separately because their coating, access, and labor rates can differ."},{"question":"Why does paint coverage vary outside?","answer":"Texture, porosity, previous coating, color change, weathering, application method, film thickness, and overspray affect actual spread. The label provides a planning range under stated conditions. Use the lower realistic coverage for rough surfaces and keep unopened surplus returnable when permitted."},{"question":"Is preparation included in exterior painting cost?","answer":"Only when the entered prep rate or contractor proposal includes it. Washing, scraping, sanding, caulking, spot priming, rot repair, masking, containment, and access can dominate labor. Require every quote to state surface condition assumptions and preparation steps rather than saying only “paint house.”"},{"question":"Does this calculator cover lead-safe work?","answer":"It does not determine whether lead is present or price compliance automatically. Work disturbing paint in pre-1978 housing may trigger federal or authorized-state requirements. Consult EPA guidance and qualified contractors, then include testing, containment, cleaning, verification, and documentation in the applicable local quote."}],"sources":[{"name":"U.S. EPA — Lead Renovation, Repair and Painting Program","url":"https://www.epa.gov/lead/renovation-repair-and-painting-rrp-program-consumers","note":"Federal guidance for renovation work that may disturb lead-based paint in pre-1978 housing, including painting and window replacement."},{"name":"Federal Trade Commission — How To Avoid a Home Improvement Scam","url":"https://consumer.ftc.gov/articles/how-avoid-home-improvement-scam","note":"Federal consumer guidance on contractor checks, multiple written estimates, itemized scope, contracts, and payment practices."}],"defaultCalculation":{"inputs":{"paintableArea":2400,"coats":2,"coverage":350,"waste":10,"paintPrice":0,"prepRate":0,"laborRate":0,"fixedCosts":0,"contingency":10},"result":{"value":"Add local quotes","unit":"to build budget","label":"Exterior painting budget","lines":[{"label":"Whole gallons for finish coats","value":"16 gal"},{"label":"Paint material","value":"Not entered"},{"label":"Surface preparation","value":"Not entered"},{"label":"Application labor","value":"Not entered"},{"label":"Contingency","value":"Not added"}],"summary":"The physical scope is calculated, but no budget is shown until you enter at least one current local price or written quote.","note":"Primer, trim colors, repairs, caulk, washing, containment, lift or scaffold access, tax, and lead-safe work are included only when their cost is represented in an entered quote."}},"reviewedOn":"2026-07-24","disclaimer":"Planning estimate only. Verify product coverage, supplier rounding, local codes and structural requirements before purchase or construction."}