Paint Calculator & Estimator

Paint Calculator & Estimator tells you exactly how much paint to buy for any room, what it will cost and which supplies you need. Fast, simple and fully offline. MEASURE A ROOM IN SECONDS • Enter length, width and height • Add doors and windows (sizes are editable) • Choose whether to paint the ceiling too • See the paintable area update as you type PICK YOUR PAINT • 1 or 2 coats • Coverage from the can label • Your own price per gallon or per litre (quart price optional) • Optional primer • Extra for waste: 0 to 20% • Your last values are remembered for the next room GET A CLEAR ANSWER • Paint needed in gallons or litres • The cans to buy, like "3 gallons + 2 quarts" or the best mix of UK tins (10 L, 5 L, 2.5 L, 1 L) • Estimated cost with a line-by-line breakdown • Area breakdown: walls, doors and windows, ceiling • Shopping list with checkboxes: roller frame, roller covers, tray, brush, painter's tape and drop cloths • Share the result as text PROJECTS AND WHOLE-HOUSE TOTALS • Save rooms into projects • See combined paint, cost and supplies for the whole job PDF ESTIMATES FOR CLIENTS • Add your business name and logo • Client name and address • Labor per square foot or a flat fee • Notes, estimate number and date • Preview and share a professional PDF MADE FOR EVERYONE • Homeowners planning a weekend project • Painters and decorators quoting jobs • Imperial (feet, gallons) and metric (metres, litres) • Currency picked automatically from your country, changeable in Settings • Light and dark mode PRIVATE BY DESIGN Every feature is free. No account needed. Everything you enter stays on your phone. Tip: estimates are a guide. Always check the coverage on your paint can.