Paint Calculator
Calculate paint gallons and cost for any room.
Last updated: June 2026
📋Full cost guides, how-to steps, and contractor pricing breakdowns at EstimatorSuite.com
Add all four walls together. Example: 12+12+12+12 = 48 ft.
Standard ceilings are 8 ft. Vaulted: 10-14 ft.
~20 sq ft per door, ~15 sq ft per window. Don't paint these.
Standard: Sherwin Williams, Behr. Most common choice for primary residences. Coverage: 350 sq ft/gal. Primer: $20-$35/gal (300 sq ft/gal).
Paint & Cost Estimate
Paintable area290 sq ftWalls: 320
Paint needed2 gal+ 1 gal primer
Material cost$70 - $115
Labor cost (if hired)$290 - $870
Total estimated cost (materials + labor)Pro painter bid range
$360 - $985DIY materials only: $70 - $115
Based on: 290 sq ft paintable area × 2 coats of standard paint. Prices from Angi + HomeAdvisor 2026 data. Last verified: June 2026.
Disclaimer: These estimates are for budgeting purposes only. Actual costs depend on your location, current material prices, and contractor rates. Always get 2-3 quotes from licensed contractors before starting any project.