Estimate the amount of exterior paint needed for your house. Enter building dimensions, window and door counts, and number of coats.
Enter Your Measurements
Results
Paint Needed
7.4
gallons
Paintable Area
1,107
sq ft
Total Wall Area
1,350
sq ft
Cost Estimate
per gallon
Estimated Cost
$369.00
Formula
How to Use This Calculator
How to Use
- 1
Measure or estimate the perimeter of your house.
- 2
Enter the wall height.
- 3
Count exterior doors and windows.
- 4
Exterior paint coverage is estimated at 300 sq ft per gallon.
Frequently Asked Questions
Frequently Asked Questions
How much paint for a 2000 sq ft house exterior?
How long does exterior paint last?
In-Depth Guides
How Much Paint Do You Need? Room-by-Room Guide
Calculate exactly how many gallons of paint you need for any room. Covers wall measurement, door/window deductions, coats, primer, and paint sheen selection.
Exterior House Painting Cost Guide: Calculate Paint & Labor
Calculate how much paint and labor costs to paint a house exterior. Coverage rates, paint types, DIY vs professional, and cost per square foot.
Related Calculators
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About This Calculator
This calculator uses the formula: Gallons = ((Perimeter × Height) - Openings) × Coats ÷ 300. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
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