Painting Cost Calculator
Estimate total painting cost - DIY vs professional
Length of the room
Width of the room
Height of walls
Affects per-gallon price
Wall Area
—
sq ft
Paint Needed
—
gallons
DIY Cost
—
USD
Professional Cost
—
USD
Disclaimer: Results are estimates based on standard formulas. Not a substitute for professional advice from a licensed contractor, engineer, or architect. Verify all calculations before making purchasing or construction decisions.
How to Use This Calculator
Our calculator estimates both DIY and professional costs so you can make an informed decision.
- Measure room dimensions
- Select paint quality
- Use the calculator
- Compare DIY vs professional costs
AI Insights
Smart analysis for your project
Smart Estimates
Our AI cross-references material costs, regional pricing, and project complexity for more accurate estimates.
Waste Optimization
AI-calculated waste factors based on project type, not flat percentages. Saves 5-15% on material costs.
Best Practices
Recommendations derived from building codes, contractor data, and thousands of completed projects.
Calculation Formula
Wall area = 2 x (L + W) x H
Gallons = Wall area x 2 coats / 350
DIY = Gallons x Price + $75 supplies
Pro = Wall area x $2.50/sqft
Frequently Asked Questions
How much does it cost to paint a room professionally?
Professional painting costs $1.50-$3.50 per square foot. A standard 12x10 room costs $380-$790.
Is it cheaper to paint yourself?
DIY costs $100-$250 for a 12x10 room. That is 50-70% less than hiring a pro.