Paint Calculator

Our paint calculator helps you determine exactly how much paint you need for your room painting project. Whether you're painting a bedroom, living room, bathroom, or entire house, this tool calculates the gallons of paint required based on your room dimensions, number of coats, and accounts for doors and windows that won't be painted.

Accurate paint estimation saves money by preventing over-purchasing and eliminates frustrating trips back to the store for more paint mid-project. The calculator uses industry-standard coverage rates of approximately 375 square feet per gallon, which accounts for typical wall textures and paint absorption. For heavily textured walls or porous surfaces, you may need 10-15% more paint.

This tool is perfect for DIY homeowners tackling their first paint project, experienced painters planning material purchases, contractors preparing estimates, and anyone wondering "how much paint do I need for a 12x12 room?" The calculator also provides cost estimates to help you budget for your painting project.