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.