# Paint Calculator Cost Budget accurately for your next project. Our paint cost calculator estimates materials, supplies, and labor for both interior and exterior painting jobs. ## What this calculates Planning a paint project involves budgeting for paint, primer, supplies, and labor. Our paint cost calculator breaks down each of these expenses so you can accurately estimate your total project cost. We use updated 2025 retail pricing from top brands like Sherwin-Williams, Benjamin Moore, and Behr, alongside current professional labor rates. You can easily switch between interior and exterior projects to see exactly how your choices impact the bottom line. ## Inputs - **Project Type** — options: Interior (walls, ceilings, trim), Exterior (siding, trim, soffit) - **Area to Paint** (sq ft) — min 0 — Wall square footage. Rough interior rule: floor area × 3 for 8 ft (2.4 m) ceilings. - **Number of Coats** — min 1, max 4 — 2 coats standard for new color; 3 for dark-to-light transitions - **Paint Quality** — options: Economy ($25/gal), Standard ($45/gal), Premium ($70/gal) — Premium paint (Sherwin Duration, Benjamin Moore Aura) often covers in one coat - **Labor** — options: DIY (no labor cost), Pro - Basic prep, Pro - Standard, Pro - Heavy prep / premium - **Include Primer** — Add one primer coat at $30/gal (covers 300 sq ft/coat) ## Outputs - **Paint Gallons** (gal) - **Paint Cost** — formatted as currency - **Primer Cost** — formatted as currency - **Supplies Cost** — formatted as currency — Rollers, brushes, tape, drop cloths - **Labor Cost** — formatted as currency - **Total Paint Cost** — formatted as currency - **Cost per Square Foot** — formatted as currency ## Details How We Calculate Your Paint Costs The total cost of your paint project comes down to four basic components: - Paint: We calculate this by multiplying your wall square footage by your desired number of coats. We then divide that number by the standard coverage rate (350 for interior, 300 for exterior) and multiply by the price per gallon. - Primer: If your walls need primer, we divide your total wall area by 300 and multiply by the standard $30 per gallon rate. - Supplies: We estimate $60 for basic interior supplies and $100 for exterior tools for DIY projects. - Labor: We multiply your wall square footage by current professional labor rates to give you an accurate contractor estimate. Estimating Interior Paint Costs Interior painting costs range from about $500 for a simple DIY bedroom project to well over $15,000 for a professional, whole-house premium job. Your total depends heavily on your wall square footage, the number of coats required, the quality of paint you select, and whether you hire a professional. For example, painting the interior of a 1,500-square-foot home with standard paint costs about $11,000 to $13,000 if you hire a professional crew. If you tackle the exact same job yourself, you will only spend $600 to $700 on materials. Estimating Exterior Paint Costs Exterior painting generally costs more per square foot than interior work. Exterior surfaces absorb more moisture, which drops the typical coverage rate to roughly 300 square feet per gallon. Exterior paint also costs about 15% more per gallon than interior formulas. Professional labor rates also increase to $1.50 to $4.50 per square foot. Exterior work requires tall ladders, heavy scraping, extensive caulking, and built-in buffer time for weather delays. A typical 2,000-square-foot home exterior costs between $4,000 and $8,000 for professional painting, or $500 to $800 if you buy the supplies and do it yourself. Understanding Paint Quality and Prices - Economy ($25 per gallon): This basic builder-grade paint covers about 300 square feet. It rarely finishes the job in one coat. - Standard ($45 per gallon): Reliable options like Behr Premium Plus or Valspar Signature cover 350 square feet and provide solid performance. - Premium ($70 per gallon): High-end paints like Sherwin-Williams Duration or Benjamin Moore Aura cover up to 400 square feet. Buying premium paint often saves you money in the long run. Because premium paint typically requires just one coat, it cuts your required labor time in half. For professional jobs, the massive savings on labor easily offset the higher price tag on the paint itself. Average Cost Per Square Foot When calculating these metrics, always divide your total project cost by the actual wall square footage you plan to paint, rather than your home's total floor plan size. - DIY Interior: $0.15 to $0.30 per square foot (paint only). - Professional Interior: $1.80 to $4.00 per square foot (paint and labor). - DIY Exterior: $0.25 to $0.45 per square foot (paint only). - Professional Exterior: $2.00 to $5.00 per square foot (paint and labor). When Do You Need Primer? You should budget for primer (around $30 per gallon) if you plan to paint over bare drywall, cover a dark wall with a light color, block out severe water stains or wood knots, or transition from an oil-based paint to a latex paint. You can usually skip the primer if you are applying a fresh coat of the exact same color over high-quality existing paint. DIY vs. Hiring a Professional Doing the work yourself saves you 85% to 90% of the total project cost. For a standard 1,500-square-foot interior, a DIY approach costs roughly $600 to $700. Hiring a professional for the same space ranges from $8,000 for a basic job up to $18,000 for a premium finish that includes ceilings and detailed trim work. The decision usually comes down to your available free time. A DIY project of this size takes two to four weekends of hard work, while an experienced professional crew finishes the job in just three to five days. ## Frequently Asked Questions **Q: How do I use the paint cost calculator?** A: Simply enter your wall square footage, select interior or exterior, and choose your paint quality. We will generate a full breakdown of your expected material and labor costs. **Q: Should I buy premium or standard paint?** A: Premium paint costs more per gallon but often covers in just one coat. This cuts your labor time in half, making it the smarter financial choice for most projects. **Q: Why is exterior painting more expensive than interior?** A: Exterior surfaces absorb more paint, and the work requires heavy scraping, caulking, and ladder safety precautions, all of which drive up labor rates. --- Source: https://vastcalc.com/calculators/construction/paint-cost Category: Construction Last updated: 2026-04-21