Paint Calculator

🎨 Room Paint Calculator

Perfect for your next painting project

💡 Enter room dimensions to calculate the total area of all 4 walls

💡 Only fill if painting the ceiling

💡 Add up all baseboards, door frames, window trim, etc.

Doors & Windows (subtract from wall area)

💡 Why this matters: Since you don't paint over doors and windows, we subtract their area from the total wall area to get accurate paint requirements.

Typical: 3×7 ft each
Typical: 3×4 ft each
Total area (sq ft/m)

Examples: Patio doors, bay windows, large picture windows - measure and enter total area in the third field.

💡 Pro Tip: Buy slightly more paint than calculated. Touch-ups later may not match perfectly due to batch variations and sheen differences.

Surface Areas

Total Wall Area: -
Ceiling Area: -
Trim Area: -
Openings Subtracted: -
Net Paintable Area: -

Paint Requirements

Primer Needed: -
Paint Needed (per coat): -
Total Paint Needed: -
🎨 Total Gallons to Buy: -

💡 Helpful Tips

  • Round up to the nearest quart when purchasing
  • Buy all paint from the same batch for color consistency
  • Consider buying an extra quart for future touch-ups
  • Different surface types may require different paint formulations